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1.
Prensa méd. argent ; 108(9): 437-440, 20220000. tab
Article in English | LILACS, BINACIS | ID: biblio-1413425

ABSTRACT

Los errores de refracción contribuyen como un gran problema de salud pública. Las crecientes tasas de prevalencia de la miopía han alcanzado los niveles de epidemia en varias áreas. Este estudio tuvo como objetivo determinar las tasas de prevalencia de errores de refracción en los estudiantes de medicina. Se realizó un estudio prospectivo en el Departamento de Oftalmología, durante un período de un año desde enero de 2020 hasta diciembre de 2020. Los estudiantes de medicina fueron seleccionados al azar, como un total de 250 sujetos. Todos se sometieron a un examen oftálmico. De 250 estudiantes, se documentaron 148 (59.2%) casos de RE. La mayoría de los casos comunes eran mujeres (89, 60.1%), mientras que los hombres eran (59, 39.9%). De estos, 98 estudiantes tienen miopía (66.2%), 42 casos tienen astigmatismo (28.4%) y 8 casos tienen hipermetropía (5.4%). La etapa tardía de las clases (sexto) tiene los casos RE más frecuentes. La miopía fue la RE predominante entre los estudiantes de medicina. La clase anticipada y la mujer son factores predisponentes.


Refractive errors are contributing as a major public health problem. The increasing prevalence rates of myopia have reaching to epidemic levels in several areas. This study was aimed to determine the prevalence rates of refractive errors in medical students. A prospective study was conducted in the Department of Ophthalmology, over a period of one year from Jan 2020 to Dec 2020. Medical students were randomly selected, as a total of 250 subjects. All were undergoing an ophthalmic examination. Of 250 students, 148(59.2%) cases of RE were documented. Most common cases were female (89, 60.1%), whereas male was (59, 39.9%). Of these, 98 students have myopia (66.2%), 42 cases have astigmatism (28.4%) and 8 cases have hypermetropia (5.4%). The late stage of classes (6th) has the most frequent RE cases. Myopia was the predominant RE among the medical students. Advance class and female are predisposing factors


Subject(s)
Humans , Adult , Refractive Errors/pathology , Astigmatism/diagnosis , Students, Medical , Prevalence , Myopia/diagnosis
2.
Prensa méd. argent ; 108(7): 377-383, 20220000. tab, fig
Article in English | LILACS, BINACIS | ID: biblio-1400170

ABSTRACT

Determinar la prevalencia del error de refracción (RE) como causa en los ojos en los niños en niños de esta edad (6-12 años) en la ciudad de Sulaimania. El estudio de tasa de prevalencia entre los pacientes que asisten al Shahed Dr. Aso Eye Hospital para el período del 1 de octubre de 2008 al 1 de junio de 2009. Un total de 116 niños (6-12 años) asisten al departamento de entrecerrares durante aproximadamente 8 meses. El estudio incluyó ambos sexos, eran niños de 55 años y niñas 61. Se sometieron a un examen ocular completo. Encontramos que (72) pacientes (62.02 %) tenían un error de refracción, incluyen: 33 pacientes (45.9 %) = hipermetropia (H); 22 pacientes (29.16%) = miopía [m]; 18 pacientes (24.3%) astigmatismo (AST.); 4 mixtos; 6 h-as. y 8 m-as. En conclusiones, la causa más frecuente del entrecerrar de la infancia a este ancho [6-12 años) es el error refractivo, mientras que las otras causas en su conjunto constituyen solo 1/3 de las causas, y el error de refracción más común es la hipermetropía


To determine the prevalence of refractive error (RE) as a cause in squinted in children in this aged (6-12 years) in Sulaimania city. The prevalence rate study among patient attending Shahed Dr. Aso eye hospital for the period from 1st October 2008 - 1st June 2009. A total of 116 children ( 6-12 years) attending squint department for about 8 months. The study included both sexes, were boys 55 and girls 61. Underwent full ocular examination. We found that (72) patients (62.02%) had refractive error, include: 33 patients (45.9 %) = Hypermetropia (H); 22 patients (29.16%) = Myopia [M]; 18 patients (24.3%) Astigmatism (Ast.); 4 mixed; 6 H-Ast. and 8 M-Ast. In conclusions, the most prevalent cause of childhood squint at this aged [6-12 years) is refractive error while the other causes as a whole constitute only 1/3 of the causes, and most common refractive error is hypermetropia


Subject(s)
Humans , Male , Female , Child , Refractive Errors/pathology , Astigmatism/pathology , Hyperopia/pathology , Myopia/pathology
3.
Medisan ; 25(3)2021. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1287302

ABSTRACT

Introducción: La operación de pterigión se exige como habilidad desde el primer año de residencia y la evaluación topográfica es clave para evaluar las modificaciones corneales y perfeccionar las habilidades clinicoquirúrgicas de los cirujanos en formación. Objetivo: Determinar las modificaciones corneales en pacientes operados de pterigión en el Centro Oftalmológico de Santiago de Cuba. Métodos: Se realizó un estudio descriptivo, prospectivo y transversal de 53 pacientes operados de pterigión en el Centro Oftalmológico de Santiago de Cuba, desde enero de 2019 hasta igual mes de 2021, a los cuales se les evaluó topográficamente antes y después de la intervención quirúrgica. Resultados: Predominaron el sexo femenino (60,4 %), el grupo etario de 40-49 años (5,8 %), el grado II de la enfermedad (43,4 %) y el astigmatismo inducido como complicación más frecuente (33,9 %). El poder corneal promedio sufrió variación de 43,25D a 45,75D y el astigmatismo topográfico descendió de 4,75 a 3,55 D. Conclusiones: Con el uso de la topografía se comprobó que existen modificaciones corneales importantes derivadas de la invasión del pterigión en la córnea y de la manipulación quirúrgica.


Introduction: Pterigium surgery is demanded as a skill in the first year of the residency and the topographical evaluation is a key element to evaluate corneal modifications and to improve clinical -surgical skill of training surgeons. Objective: To determine the corneal modifications in patients with pterigium surgery in the Ophthalmological Center from Santiago de Cuba, from January 2019 to the same month in 2021, in whom a topographical evaluation was carried out before and after the surgical procedure. Results: Female sex (60.4 %), age group 40-49 (5.8 %), the disease grade II (43.4 %) and induced astigmatism as the most frequent complication (33.9 %) predominated. Average corneal power suffered a variation of 43.25 D and 45.75 and the topographical astismatism decreased from 4.75 to 3.55 D. Conclusions: With the use of topography it was proven that there are corneal modifications derived from pterigium invasion to the cornea and from the surgical manipulation.


Subject(s)
Professional Competence , Pterygium/surgery , Astigmatism , Corneal Topography/methods
4.
Rev. cuba. oftalmol ; 34(2): e1009, 2021. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1341455

ABSTRACT

Objetivo: Determinar cómo controlar la progresión del astigmatismo en la facoemulsificación para mejorar sus resultados. Métodos: Se realizó un estudio descriptivo, prospectivo, de serie de casos en 43 ojos de pacientes con diagnóstico de catarata, operados por la técnica de facoemulsificación por prechop con implante de lente intraocular plegable, en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer" desde noviembre del año 2018 hasta abril de 2020. Se emplearon los porcentajes y números absolutos para las variables cualitativas, las cuantitativas, la media y la desviación estándar, con un intervalo de confianza del 95 por ciento. Resultados: La edad media fue de 69,4 ± 8,3 años (51,16 por ciento); la dureza NO3; la mejor agudeza visual sin corrección mejoró en el 76,75 por ciento entre 0,8 a 1,0; la queratometría media pre- vs. posoperatoria no mostró diferencias estadísticamente significativas; el cilindro refractivo posoperatorio fue menor de 0,5 dioptrías en el 72,09 por ciento; el 51,17 por ciento de los ojos en el preoperatorio tenían astigmatismo refractivo contra la regla, lo cual mejoró según esta al mes de operado en el 60,47 por ciento de los pacientes. La calidad de vida en el 100 por ciento de los casos fue muy buena al mes de operados, según FV-14. Conclusiones: La corrección del astigmatismo con las incisiones personalizadas en la facoemulsificación ofrece buena predictibilidad y mejora su calidad visual y de vida(AU)


Objective: Determine how to control the progression of astigmatism in phacoemulsification to improve its results. Methods: A descriptive prospective study was conducted of a case series of 43 eyes of cataract patients undergoing prechop phacoemulsification with foldable intraocular lens implantation at Ramón Pando Ferrer Cuban Institute of Ophthalmology from November 2018 to April 2020. Percentages and absolute numbers were used for qualitative variables, and mean and standard deviation for quantitative variables, with a confidence interval of 95 percent. Results: Mean age was 69.4 ± 8.3 years (51.16 percent); hardness was NO3; in 76.75 percent best uncorrected visual acuity improved 0.8-1.0; pre- vs. postoperative mean keratometry did not show any statistically significant differences; in 72.09 percent the postoperative refractive cylinder was smaller than 0.5 diopters; 51.17 percent of the eyes had preoperative refractive against-the-rule astigmatism, improving at one month postoperative in 60.47 percent. Quality of life by the VF-14 survey was very good in 100 percent of the patients one month after surgery. Conclusions: Correction of astigmatism with personalized incisions in phacoemulsification provides good predictability and improves visual quality and quality of life(AU)


Subject(s)
Humans , Astigmatism , Cataract/diagnosis , Phacoemulsification/methods , Lens Implantation, Intraocular/methods , Quality of Life , Epidemiology, Descriptive , Prospective Studies
5.
Rev. cuba. oftalmol ; 34(2): e1062, 2021. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1341449

ABSTRACT

Objetivo: Analizar la recuperación y la calidad visual posoperatoria en la cirugía bilateral del cristalino por facoemulsificación. Métodos: Se realizó un estudio prospectivo y analítico de serie de casos en 40 pacientes con el diagnóstico de catarata bilateral, operados por cirugía bilateral simultánea del cristalino, atendidos en el Centro de Microcirugía Ocular del Instituto Cubano de Oftalmología "Ramón Pando Ferrer", durante el periodo comprendido desde noviembre del año 2018 hasta marzo de 2020. Se analizaron las variables edad, sexo, dureza nuclear según LOCS III, mejor agudeza visual con y sin corrección, astigmatismo medio inducido, visión de colores, sensibilidad al contraste, velocidad de lectura y estudio de la calidad de vida por la encuesta FV-14. Se emplearon los porcentajes y los números absolutos para resumir las variables cualitativas. En el caso de las cuantitativas se usó la media con su desviación estándar y el intervalo de confianza del 95 por ciento. Resultados: Fue más frecuente el sexo femenino en el 65 por ciento; la edad media fue de 69,1 ± 8,1 años. El 55,11 por ciento de los pacientes tuvo dureza NO3. La media de la mejor agudeza visual sin corrección mejoró a 0,89 ± 0,25; la mejor agudeza visual con corrección mejoró a 0,96 ± 0,03; el resto de las variables estudiadas mostró mejoría significativa. Conclusiones: La cirugía bilateral simultánea del cristalino personalizada contribuye de manera significativa a la mejoría de la visión en cantidad y calidad, lo que permite recuperar la calidad de vida de los pacientes(AU)


Objective: Analyze postoperative recovery and visual quality in bilateral crystalline lens surgery by phacoemulsification. Methods: An analytical prospective study was conducted of a case series of 40 bilateral cataract patients undergoing simultaneous bilateral crystalline lens surgery at the Center for Ocular Microsurgery of Ramón Pando Ferrer Cuban Institute of Ophthalmology from November 2018 to March 2020. The variables analyzed were age, sex, nuclear hardness by LOCS III, best visual acuity with and without correction, induced medial astigmatism, color vision, contrast sensitivity, reading speed and quality of life by the VF-14 survey. Percentages and absolute numbers were used to summarize qualitative variables, whereas mean and standard deviation were used for quantitative variables, with a 95 percent confidence interval. Results: Female sex prevailed with 65 percent; mean age was 69.1 ± 8.1 years. Hardness was NO3 in 55.11 percent of the patients examined. Mean best visual acuity without correction improved to 0.89 ± 0.25; best corrected visual acuity improved to 0.96 ± 0.03; the remaining variables studied showed significant improvement. Conclusion: Simultaneous personalized bilateral crystalline lens surgery significantly contributes to visual improvement both quantitatively and qualitatively, making it possible for patients to recover their quality of life(AU)


Subject(s)
Humans , Female , Aged , Astigmatism/etiology , Cataract/diagnosis , Phacoemulsification/methods , Microsurgery/methods , Quality of Life , Prospective Studies , Color Vision
6.
Rev. cuba. oftalmol ; 34(1): e1027, 2021. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1289528

ABSTRACT

Objetivo: Comparar los resultados refractivos del implante secundario de lentes intraoculares rígidos de la cámara anterior con apoyo angular y de lentes intraoculares plegables de la cámara posterior suturados a iris. Métodos: Se realizó un estudio casi experimental con control no equivalente (cohorte histórica). Se estudiaron 50 pacientes (50 ojos) con afaquia e inadecuado soporte capsular después de la cirugía de catarata, a quienes se les realizó implante secundario de lente intraocular con dos técnicas diferentes: lente intraocular en la cámara anterior con apoyo angular (25 ojos) y lente intraocular plegable de la cámara posterior suturado a iris (25 ojos). Resultados: Se observó que en el grupo de pacientes tratados con lente intraocular suturado a iris el porcentaje de pacientes con una visión de 20/40 o más fue significativamente superior (96,0 por ciento vs. 60,0 por ciento, p= 0,000) en los resultados refractivos obtenidos según el grupo de tratamiento. En el grupo A predominaron los pacientes que quedaron emétropes, seguidos de los pacientes miopes. En el grupo B predominaron los pacientes miopes y a diferencia del grupo anterior ningún paciente quedó hipermétrope. Conclusiones: La lente intraocular plegable de la cámara posterior suturada a iris mostró ser más eficaz, indujo menos astigmatismo y fue mejor en la predictibilidad de la esfera en un rango estricto de ± 1,00 dioptrías(AU)


Objective: Compare the refractive results of secondary implantation of rigid angle-supported intraocular lenses in the anterior chamber and foldable iris-suture-fixated intraocular lenses in the posterior chamber. Methods: A quasi-experimental non-equivalent control (historical cohort) study was conducted of 50 patients (50 eyes) with aphakia and inadequate capsular support after cataract surgery, who underwent secondary intraocular lens implantation with two different techniques: angle-supported intraocular lens in the anterior chamber (25 eyes) and foldable iris-suture-fixated intraocular lens in the posterior chamber (25 eyes). Results: In the group treated with iris-suture-fixated intraocular lens implantation the percentage of patients with 20/40 vision or more was significantly higher (96.0 percent vs. 60.0 percent, p= 0.000) in the refractive results obtained for each treatment group. In Group A a predominance was found of emmetropic, followed by myopic patients. In Group B myopic patients prevailed and unlike the other group no patient was hyperopic. Conclusions: Foldable iris-suture-fixated posterior chamber intraocular lenses proved more effective, induced less astigmatism and displayed better sphere predictability in a strict range of ± 1.00 diopters(AU)


Subject(s)
Humans , Aphakia/etiology , Astigmatism/etiology , Lens Implantation, Intraocular/methods , Anterior Chamber/surgery , Cohort Studies
7.
Arq. bras. oftalmol ; 84(1): 11-16, Jan.-Feb. 2021. tab, graf
Article in English | LILACS | ID: biblio-1153094

ABSTRACT

ABSTRACT Purpose: To determine the effect of upper blepharoplasty on corneal topography and intraocular lens power calculation using Galilei and IOLMaster. Methods: Thirty patients submitted to upper blepharoplasty from May 2014 to March 2017 at the Hospital Oftalmológico de Sorocaba (São Paulo, Brazil) were included in this observational case series. All patients underwent imaging sessions with Galilei and IOLMaster preoperatively (baseline) and at 1 and 6 months postoperatively. Primary outcome measures using both devices included flattest, average, and steepest corneal curvature, corneal astigmatism, and blepharoplasty-induced corneal astigmatism. Determination of axial length and lens power calculation were performed using only IOLMaster (Holladay formula). Paired t-test and vectorial analysis were used for statistical analysis. Results: Sixty eyes from 30 patients were prospectively included. Vectorial analysis showed that 6 months after surgery, blepharoplasty induced on average 0.39 D and 0.31 D of corneal astigmatism, as measured with Galilei and IOLMaster, respectively. IOLMaster measurements showed that average corneal curvature (44.56 vs 44.64 D, p=0.01), steepest corneal curvature (45.17 vs 45.31, p=0.01) and corneal astigmatism (1.22 vs 1.34, p=0.03) were higher 6 months after surgery. IOLMaster measurements also showed that intraocular lens power was significantly smaller 6 months after surgery (22.07 vs 21.93, p=0.004). All other parameters showed no change for comparisons between baseline and 6 months (p>0.05 for all comparisons). Conclusion: Upper eyelid blepharoplasty influenced intraocular lens calculation using the IOLMaster. However, the influence was not clinically significant. No topographic changes were found using Galilei.


RESUMO Objetivo: Determinar o efeito da blefaroplastia superior na topografia corneana e no cálculo do poder das lentes intraoculares usando Galilei e IOLMaster. Métodos: Trinta pacientes submetidos a blefaroplastia superior de maio de 2014 a março de 2017 no Hospital Oftalmológico de Sorocaba, São Paulo, Brasil foram incluídos neste estudo de série de casos observacional. Todos os pacientes foram submetidos a sessões de imagem com Galilei e IOLMaster antes da cirurgia (exame de base) e no 1º e 6º mês pós-operatório. Os resultados primários utilizando os dois aparelhos incluíram ceratometria, astigmatismo corenano e astigmatismo corneano induzido pela blefaroplastia. O comprimento axial e o cálculo do poder da lente intraocular foram realizados unicamente com o IOLMaster (fórmula de Holladay). Teste-t pareado e análise vetorial foram usados na análise estatística. Resultados: Sessenta olhos de 30 pacientes foram incluídos prospectivamente. A análise vec­torial mostrou que após 6 meses da cirurgia, a blefaroplastia superior induziu na média 0,39 D de astigmatismo corneano medido com o Galilei e 0,31 D com IOLMaster. As medidas com o IOLMaster mostraram que a ceratometria média (44,56 vs 44,64 D, p=0,01), ceratometria máxima (45,17 vs 45,31, p=0,01) e o astigmatismo corneano (1,22 vs 1,34, p=0,03) foram maiores após 6 meses da blefaroplastia. As medidas com IOLMaster mostraram que o poder da lente intraocular foi significativamente menor 6 meses após a blefaroplastia (22,07 vs 21,93, p=0,004). Todos os outros parâmetros não mostraram mudanças entre o pré-operatório e o 6º mês da cirurgia (p>0,05 para todas as comparações). Conclusões: A blefaroplastia superior influenciou o cálculo da lente intrao­cular utilizando o IOLMaster. Contudo, a influência não foi cli­­nicamente significativa. Não foram encontradas mudanças topográficas com o Galilei.


Subject(s)
Humans , Astigmatism , Astigmatism/etiology , Biometry , Blepharoplasty , Lenses, Intraocular , Refraction, Ocular , Brazil , Cornea/surgery , Cornea/diagnostic imaging , Corneal Topography , Blepharoplasty/adverse effects , Lens Implantation, Intraocular , Eyelids
8.
Rev. bras. oftalmol ; 80(6): e0053, 2021. tab, graf
Article in Portuguese | LILACS | ID: biblio-1351855

ABSTRACT

RESUMO Objetivo: Avaliar retrospectivamente a influência da espessura do anel intracorneano na redução do astigmatismo corneano em pacientes portadores de ceratocone. Métodos: De um banco de dados com 2.033 olhos submetidos à cirurgia de implante de anel corneano, foi selecionada uma amostra de 90 olhos com características semelhantes em relação à ceratometria e ao astigmatismo. Todos os olhos deste estudo receberam dois segmentos de comprimento de arco tradicional de aproximadamente 160°, com espessuras variadas: Grupo A recebeu dois segmentos de 150µm; Grupo B recebeu dois segmentos de 200µm, e Grupo C recebeu dois segmentos de 250µm. As variáveis analisadas foram ceratometria média e astigmatismo corneano pré e pós-operatório. Resultados: Nos olhos que receberam dois segmentos de anel de 150µm de espessura (Grupo A), houve redução média de 5,0D (10%) em relação à ceratometria média e redução média de 3,26D (57,69%) em relação ao astigmatismo corneano. Na amostra em que foram utilizados dois segmentos de 200µm (Grupo B), foi observada redução da ceratometria média de 7,0D (14,28%) e do astigmatismo corneano de 3,53D (63,6%). Já na amostra que recebeu dois segmentos de anel de 250µm de espessura (Grupo C), a redução média da ceratometria foi de 10D (20,4%) e de seu astigmatismo corneano de 2,09D (38,99%). Conclusão: Nos pacientes com ceratocone submetidos à cirurgia de anel corneano, o aumento da espessura dos segmentos implantados promove maior aplanamento da córnea, mas não o aumento em sua capacidade de reduzir o astigmatismo ceratométrico. Seria interessante a análise de uma amostra maior de pacientes, aliada a cálculos vetoriais de astigmatismo, para comprovar os achados deste estudo.


ABSTRACT Objective: To retrospectively evaluate the influence of intracorneal ring thickness on reduction of corneal astigmatism in patients with keratoconus. Methods: From a database of 2,033 eyes submitted to corneal ring implant surgery, a sample of 90 eyes with similar keratometry and astigmatism characteristics was selected. All eyes in this study received two segments of traditional arc length of approximately 160°, with varying thicknesses: Group A received two segments of 150 µm; Group B received two segments of 200 µm, and Group C received two segments of 250 µm. The variables analyzed were mean keratometry and corneal astigmatism before and after surgery. Results: In the eyes that received two 150-µm ring segments (Group A), there was a mean reduction of 5.0 D (10%) in relation to mean keratometry, and a mean reduction of 3.26 D (57.69%) in relation to corneal astigmatism. In the sample in which two 200-µm segments (Group B) were used, there was a mean reduction in keratometry of 7.0 D (14.28%) and in corneal astigmatism of 3.53 D (63.6%). In the sample receiving two 250-µm ring segments (Group C), the mean reduction in keratometry was 10 D (20.4%) and in corneal astigmatism was 2.09 D (38.99%). Conclusion: In keratoconus patients undergoing corneal ring surgery, increased thickness of the implanted segments promotes greater flattening of the cornea, but does not enhance their ability to reduce corneal astigmatism. It would be interesting to analyze a larger sample of patients, combined with vector calculations of astigmatism, to confirm the findings of this study.


Subject(s)
Humans , Adolescent , Adult , Middle Aged , Astigmatism/surgery , Prosthesis Implantation , Keratoconus/surgery , Prostheses and Implants , Astigmatism/etiology , Visual Acuity , Corneal Topography , Keratoconus/complications
9.
Rev. bras. oftalmol ; 80(3): e0012, 2021. tab, graf
Article in Portuguese | LILACS | ID: biblio-1280123

ABSTRACT

RESUMO O implante de lentes intraoculares fácicas com finalidade refrativa é uma alternativa cirúrgica eletiva segura e eficiente. Essa opção deve ser considerada de forma eletiva para tratar ametropias, nos casos em que as cirurgias de correção visual refrativa a laser na córnea apresentam maior risco de complicações, seja por características da córnea ou pela magnitude da ametropia. Este artigo traz uma revisão prospectiva das lentes fácicas disponíveis no mercado brasileiro em 2020 e suas características.


ABSTRACT Implantation of phakic intraocular lenses for refractive purpose is a safe and efficient elective surgical alternative. This option should be considered to electively treat ametropia when laser corneal refractive surgery has higher risk of complications, either due to corneal characteristics or the magnitude of ametropia. This article provides a prospective review of the phakic lenses available in the Brazilian market in 2020 and their characteristics.


Subject(s)
Astigmatism/surgery , Refractive Surgical Procedures , Phakic Intraocular Lenses , Myopia/surgery
10.
Vive (El Alto) ; 3(9): 187-197, dic. 2020. ilus, tab.
Article in Spanish | LILACS | ID: biblio-1252337

ABSTRACT

El tratamiento quirúrgico del pterigión es uno de los procedimientos más realizados en la consulta oftalmológica, aunque con frecuencia conlleva molestias y cambios en la agudeza visual. OBJETIVO: evidenciar si existen cambios en cuanto a agudeza visual y su ametropía, en pacientes diagnosticados con pterigión intervenidos quirúrgicamente, en la ciudad de Quito. METODO: se trata de un estudio observacional longitudinal que incluyó 161 pacientes. Se comparó agudeza visual y ametropía antes y 15 días después de la intervención quirúrgica. RESULTADOS: la mayor parte de los pacientes fue de género femenino (n = 118, 73%) tuvo entre 30 y 59 años (n = 127, 79%), presentó pterigión grado III (n = 113, 70%) y fue intervenido del ojo derecho (n = 89, 55%). La agudeza visual de los pacientes mejoró ligeramente. El número de pacientes con agudeza visual 20/20 aumentó de 68 (42%) a 72 (45%). Se observó además una disminución en el número de pacientes con agudeza visual 20/350, 20/200, 20/100, 20/80, 20/60 y 20/50. No hubo cambios en el número de pacientes amétropes que se mantuvo en 69 (43%). Tanto el número de personas con astigmatismo miópico compuesto, como con astigmatismo mixto eje contra la regla disminuyeron de 11 (7%) a 8 (5%) y de 24 (15%) a 16 (10%), respectivamente. CONCLUSIÓN: tanto la agudeza visual como la ametropía de pacientes con pterigión mejoran ligeramente después de recibir tratamiento quirúrgico.


The surgical treatment of the pterygium is one of the most performed procedures in the ophthalmologic consultation, although it often involves discomfort and changes in visual acuity. OBJECTIVE: to show if there are changes in visual acuity and its ametropia, in patients diagnosed with surgically intervened pterygium, in the city of Quito. METHOD: This is a longitudinal observational study that included 161 patients. Visual acuity and ametropia were compared before and 15 days after surgery. RESULTS: most of the patients were female (n = 118, 73%), were between 30 and 59 years old (n = 127, 79%), presented grade III pterygium (n = 113, 70%) and was operated on the right eye (n = 89, 55%). The visual acuity of the patients improved slightly. The number of patients with visual acuity 20/20 increased from 68 (42%) to 72 (45%). There was also a decrease in the number of patients with visual acuity 20/350, 20/200, 20/100, 20/80, 20/60 and 20/50. There were no changes in the number of ametropic patients that remained in 69 (43%). Both the number of people with compound myopic astigmatism, and with mixed astigmatism axis against the rule decreased from 11 (7%) to 8 (5%) and from 24 (15%) to 16 (10%), respectively. CONCLUSION: both visual acuity and ametropia of patients with pterygium improve slightly after receiving surgical treatment.


O tratamento cirúrgico do pterigion é um dos procedimentos mais realizados na consulta oftalmológica, embora frequentemente implique transtornos e mudanças na acuidade visual. OBJETIVO: evidenciar se existem mudanças quanto à acuidade visual e sua ametropia, em pacientes diagnosticados com pterigion, operados cirurgicamente, na cidade de Quito. MÉTODO: é um estudo longitudinal observacional que incluiu 161 pacientes. Foi comparada acuidade visual e ametropia antes e 15 dias depois da intervenção cirúrgica. RESULTADOS: a maior parte dos pacientes foi de gênero feminino (n = 118, 73%) teve entre 30 e 59 anos (n = 127, 79%), apresentou pterigião grau III (n = 113, 70%) e foi operado do olho direito (n = 89, 55%). A acuidade visual dos pacientes melhorou ligeiramente. O número de pacientes com acuidade visual 20/20 aumentou de 68 (42%) para 72 (45%). Observou-se também uma diminuição no número de pacientes com acuidade visual 20/350, 20/200, 20/100, 20/80, 20/60 e 20/50. Não houve mudanças no número de pacientes amétropes que se manteve em 69 (43%). Tanto o número de pessoas com astigmatismo miópico composto, como com astigmatismo misto eixo contra a regra diminuíram de 11 (7%) para 8 (5%) e de 24 (15%) para 16 (10%), respectivamente. CONCLUSÃO: tanto a acuidade visual quanto a ametropia de pacientes com pterigião melhoram ligeiramente depois de receber tratamento cirúrgico.


Subject(s)
Humans , Astigmatism , Pterygium , Visual Acuity , Eye , Patients
11.
Arq. bras. oftalmol ; 83(6): 478-484, Nov.-Dec. 2020. tab, graf
Article in English | LILACS | ID: biblio-1153081

ABSTRACT

ABSTRACT Purpose: To investigate the impact of different sizes of steep meridian clear corneal incisions for phacoemul sification on anterior corneal higher-order aberrations. Methods: Medical records of patients who underwent 2.2-mm coaxial micro-incision cataract surgery or 2.75-mm coaxial small-incision cataract surgery were retrospectively reviewed. Only patients with preexisting anterior corneal astigmatism <2.00 diopters (D) and ≥0.50 D who underwent a steep meridian clear corneal incision were included. Primary outcomes were 3rd- to 6th-order anterior corneal higher-order aberrations with an 8-mm pupil. Anterior corneal astigmatism and effective phaco time were evaluated as secondary outcomes. Preoperative and 3-month postoperative outcomes were evaluated. Results: Anterior corneal astigmatism significantly decreased after both procedures; however, there was no significant difference found in surgically induced anterior corneal astigmatism between the two procedures (p=0.146). Although the total higher-order aberrations did not significantly change after both procedures, the group comparison showed a significant difference in surgically induced total higher-order aberrations (a decrease of 0.337 ± 1.156 mm in 2.2-mm coaxial micro-incision cataract surgery and an increase of 0.106 ± 0.521 mm in 2.75-mm coaxial small-incision cataract surgery, p=0.046). Spherical aberrations significantly decreased after 2.2-mm coaxial micro-incision cataract surgery (p=0.001), whereas they did not change significantly after 2.75-mm coaxial small-incision cataract surgery (p=0.564). Coma did not significantly change after either of the procedures. Trefoil did not significantly change after 2.2-mm coaxial micro-incision cataract surgery (p=0.361), whereas it significantly increased after 2.75-mm coaxial small-incision cataract surgery (p<0.001). There was no significant difference shown in effective phaco time between the procedures. A significantly positive correlation was shown between surgically induced anterior corneal astigmatism and coma in 2.75-mm coaxial small-incision cataract surgery (r=0.387, p=0.006). There was no significant correlation found between any surgically induced higher-order aberration changes and effective phaco time. Conclusions: The results showed that 2.2-mm coaxial micro-incision cataract surgery and 2.75-mm coaxial small-incision cataract surgery did not significantly degrade the total higher-order aberrations of the anterior cornea. However, the surgically induced changes in total higher-order aberration showed a significant difference between the two procedures, with a slight reduction after 2.2-mm coaxial micro-incision cataract surgery and a slight increase after 2.75-mm coaxial small-incision cataract surgery. Phaco time and power used during surgery had no impact on corneal aberrations.


RESUMO Objetivo: Investigar o impacto de diferentes ta manhos de incisões em córnea clara com meridiano íngreme para facoemulsificação com aberrações de mais alta ordem da córnea anterior. Métodos: Foram retrospectivamente revisados os prontuários médicos de pacientes que se submeteram a cirurgias de catarata com microincisões coaxiais de 2,2 mm ou com incisões coaxiais pequenas de 2,75 mm. Foram apenas incluídos pacientes com astigmatismo preexistente da córnea anterior <2,00 dioptrias (D) e ³0,50 D, e submetidos a incisões em córnea clara com meridiano íngreme. Os desfechos primários foram aberrações da córnea anterior da 3ª à 6ª ordem com uma pupila de 8 mm. O astigmatismo da córnea anterior e o tempo efetivo de facoemulsificação foram avaliados como desfechos secundários. Os desfechos pré-operatório e pós-operatório aos 3 meses também foram avaliados. Resultados: O astigmatismo da córnea anterior diminuiu significativamente após ambos os procedimentos, mas não se encontrou nenhuma diferença significativa entre os dois procedimentos quanto ao astigmatismo da córnea anterior, induzido pela cirurgia (p=0,146). Embora as aberrações totais de mais alta ordem não se tenham alterado significativamente após ambos procedimentos, a comparação entre os grupos revelou uma diferença significativa nas aberrações totais de mais alta ordem, induzidas pela cirurgia (uma diminuição de 0,337 ± 1,156 mm na cirurgia de catarata por microincisão coaxial de 2,2 mm e um aumento de 0,106 ± 0,521 mm na cirurgia de catarata por incisão coaxial pequena de 2,75 mm; p=0,046). A aberração esférica diminuiu significativamente após cirurgia de catarata por microincisão coaxial de 2,2 mm (p=0,001), mas não se alterou significativamente após cirurgia de catarata por incisão coaxial pequena de 2,75 mm (p=0,564). A aberração de coma não mudou significativamente após qualquer dos procedimentos. O trifólio não se alterou significativamente após cirurgia de catarata por microincisão coaxial de 2,2 mm (p=0,361), mas aumentou significativamente após cirurgia de catarata por incisão coaxial pequena de 2,75 mm (p<0,001). Nenhuma diferença significativa se evidenciou quanto ao tempo efetivo de faco-emulsificação entre os dois procedimentos. Houve uma correlação positiva significativa entre o astigmatismo da córnea anterior, induzido pela cirurgia e a aberração de coma na cirurgia de catarata por incisão coaxial pequena de 2,75 mm (r=0,387, p=0,006). Não foi encontrada correlação significativa entre as alterações nas aberrações totais de mais alta ordem, induzidas pela cirurgia e o tempo efetivo de faco-emulsificação. Conclusões: Nem a cirurgia de catarata por microincisão coaxial de 2,2 mm, nem aquela por incisão coaxial pequena de 2,75 mm degradaram significativamente as aberrações totais de mais alta ordem da córnea anterior. Porém, as alterações nas aberrações totais de mais alta ordem, induzidas pela cirurgia mostraram uma diferença significativa entre os dois procedimentos, com uma ligeira redução na cirurgia de catarata por microincisão coaxial de 2,2 mm e um pequeno aumento na cirurgia de catarata por incisão coaxial pequena de 2,75 mm. O tempo de facoemulsificação e a potência utilizada durante a cirurgia não tiveram impacto nas aberrações corneanas.


Subject(s)
Humans , Astigmatism , Cataract , Cataract Extraction , Phacoemulsification , Astigmatism/surgery , Astigmatism/etiology , Retrospective Studies , Phacoemulsification/adverse effects , Cornea/surgery , Corneal Topography , Lens Implantation, Intraocular
12.
Rev. cuba. oftalmol ; 33(3): e875,
Article in Spanish | LILACS, CUMED | ID: biblio-1139094

ABSTRACT

RESUMEN La catarata es la primera causa de ceguera curable en el mundo y se produce por la opacidad del cristalino, con una disminución gradual, lenta y progresiva de la agudeza visual. La cirugía para extraer el cristalino es la única forma de curar esta discapacidad visual. La facoemulsificación ha evolucionado con el fin de lograr su perfección y el objetivo de restablecer la visión de los pacientes con la mayor calidad y cantidad en el menor tiempo posible. El desarrollo científico ha estado encaminado a controlar o eliminar el astigmatismo preoperatorio o inducido por la cirugía, y para esto se ha incluido en la actualidad el empleo de los lentes intraoculares trifocales flexibles tóricos y las incisiones menores a dos milímetros en la córnea clara, así como las incisiones relajantes limbares, las incisiones opuestas en la córnea clara, la cirugía refractiva fotoablativa y el láser de femtosegundo. Para lograr un resultado refractivo en la cirugía de catarata es imprescindible minimizar al máximo el astigmatismo inducido por el procedimiento. Este éxito se logra con un estudio personalizado preoperatorio exhaustivo, que permita satisfacer las necesidades visuales del paciente y su reincorporación temprana a sus tareas. De ahí la motivación para realizar una búsqueda de los últimos diez años de diversos artículos publicados, con el objetivo de describir los principios para evaluar el astigmatismo medio inducido posterior a la cirugía del cristalino, y su repercusión en la calidad visual y de vida de los pacientes. Se utilizó la plataforma google, específicamente la Biblioteca Virtual de Salud, con todos sus buscadores(AU)


ABSTRACT Cataract is the leading cause of curable blindness worldwide. It results from opacity of the crystalline lens with gradual, slow and progressive visual acuity reduction. Surgery for removal of the crystalline lens is the only cure for this visual impairment. Phacoemulsification technique has evolved to achieve perfection and the aim of restoring patients' vision with the greatest quality and quantity in the shortest possible time. Scientific development has been aimed at either controlling or eliminating preoperative or surgically induced astigmatism. To achieve this aim, recent inclusion has been made of the use of flexible toric trifocal intraocular lenses and minor incisions at two millimeters in the clear cornea, as well as limbal relaxing incisions, opposite incisions in the clear cornea, photoablative refractive surgery and femtosecond laser. To obtain a good refractive result in cataract surgery it is indispensable to minimize the astigmatism induced by the procedure. Such success is accomplished through an exhaustive personalized preoperative study allowing to meet the visual needs of patients and their early reincorporation to daily activities. Hence the motivation to conduct a search of a variety of papers published in the last ten years with the purpose of describing the principles applied to evaluate mean induced astigmatism after crystalline lens surgery and its effect on the patients' visual acuity and quality of life. Use was made of the Google platform, particularly the Virtual Health Library with all its search engines(AU)


Subject(s)
Humans , Astigmatism , Cataract Extraction/methods , Phacoemulsification/methods , Lenses, Intraocular/adverse effects , Review Literature as Topic , Databases, Bibliographic
13.
Arq. bras. oftalmol ; 83(4): 342-345, July-Aug. 2020. graf
Article in English | LILACS | ID: biblio-1131617

ABSTRACT

ABSTRACT The approach to any refractive condition of the eye with regular astigmatism is more complicated than that for myopia or hyperopia alone. It requires familiarity with the complex images collectively identified as Sturm's conoid. Fortunately, only three of those play a critical role in the interpretation of ametropia with astigmatism. This manuscript discusses a prescription strategy for ametropias associated with regular astigmatism evolved from those three key images.


RESUMO A abordagem de qualquer condição refrativa do olho com astigmatismo regular é mais complicada do que a da miopia ou hipermetropia isoladamente. Requer familiaridade com as imagens complexas coletivamente identificadas como o conóide de Sturm. Felizmente, apenas três deles desempenham um papel crítico na interpretação da ametropia com astigmatismo. Este manuscrito mostra como uma estratégia de prescrição para as ametropias associadas ao astigmatismo regular pode evoluir a partir dessas três imagens principais.


Subject(s)
Humans , Refractive Errors , Astigmatism , Hyperopia , Myopia
14.
Fisioter. Bras ; 21(1): 59-68, mar 8, 2020.
Article in Portuguese | LILACS | ID: biblio-1282620

ABSTRACT

Na Fisioterapia Oftálmica são realizados exercícios para aumentar a função ocular. A Miopia e o Astigmatismo são erros refrativos que causam alteração da visão à distância. Objetiva-se neste estudo, verificar a influência da Fisioterapia nas alterações visuais e nas dores e desconfortos musculares. Essa pesquisa qualitativa do tipo observacional descritivo foi realizada com um grupo de cinco voluntários que apresentavam Astigmatismo e/ou Miopia. Foram utilizados seis instrumentos para coleta de dados: um questionário no início e no final da intervenção, uma avaliação da Acuidade Visual pela Escala Optométrica de Snellen, um diário de campo, uma ficha individual do colaborador e laudos médicos. O protocolo consistiu em exercícios, baseado no método Self-Healing de Meir Schneider. Com a realização deste estudo, constatou-se um aumento da Acuidade Visual, efeitos na presbiopia, na satisfação com o corpo, na autoestima, na diminuição da fadiga ocular, no desapego do uso dos óculos, no aumento da ampliação periférica, na atenção do olhar, na memória e na aquisição do conhecimento sobre os cuidados com a visão. Considera-se que a Fisioterapia Oftálmica, por intermédio do método Self-Healing, é uma ferramenta de intervenção que pode recuperar e/ou prevenir problemas oculares e diminuir dores musculares. (AU)


In Ophthalmic Physiotherapy exercises are performed to increase eye function. Myopia and Astigmatism are refractive errors that cause changes in distance vision. The objective of this study was to verify the influence of Physical therapy on visual changes, muscle pain and discomfort. This qualitative, descriptive and observational research was performed with a group of five volunteers who presented Astigmatism and/or Myopia. Six instruments were used for data collection: a questionnaire at the beginning and at the end of the intervention, a Visual Acuity assessment by the Snellen Optometric Scale, a field diary, an individual employee record and also medical reports. The protocol consisted of exercises based on Meir Schneider's Self-Healing Method. With this study, we observed an increase in Visual Acuity, effects on presbyopia, body satisfaction, self-esteem, decreased eye fatigue, detachment from wearing glasses, increased peripheral magnification, eye attention, memory and acquisition of knowledge about vision care. Ophthalmic Physiotherapy, through the Self-Healing method, is an intervention tool that can recover and/or prevent eye problems and decrease muscle pain. (AU)


Subject(s)
Humans , Astigmatism , Visual Acuity , Physical Therapy Modalities , Myopia
15.
Rev. bras. oftalmol ; 79(2): 95-98, Mar.-Apr. 2020. tab, graf
Article in Portuguese | LILACS | ID: biblio-1137937

ABSTRACT

Resumo Objetivo: Avaliar o astigmatismo induzido pela cirurgia de catarata através da técnica de facoemulsificação (FACO) guiada pelo planejador cirúrgico VERION®, em um serviço oftalmológico do Paraná. Métodos: O estudo tem caráter observacional com avaliação individualizada de prontuários de forma retrospectiva, analisando 37 olhos de 20 pacientes operados de catarata pela técnica de FACO com a utilização do VERION® e implantação de lente não-tórica no Hospital de Olhos de Cascavel - PR no período de maio de 2016 a novembro de 2018. Resultados: Dentro de nossa amostra composta por 37 olhos abordados com assistência do VERION®, 43% dos participantes do estudo (n=16) apresentaram redução do astigmatismo inicial, inclusive com eliminação de graus mais graves de astigmatismo (≥2.5 D). Conclusão: O impacto do VERION® foi significativo uma vez que permitiu a correção do astigmatismo prévio de uma parte da amostragem. Em olhos que ocorreram astigmatismo induzido cirurgicamente essa complicação foi menos relevante clinicamente em comparação com incisões corneanas da técnica convencional.


Abstract Objective: To evaluate the astigmatism induced by cataract surgery through the phacoemulsification (PHACO) technique guided by the VERION® surgical planner, in an ophthalmological service of Paraná. Methods: This is an observational study with retrospective individualized evaluation of medical records, analyzing 37 eyes of 20 patients who underwent cataract surgery using the PHACO technique using VERION® and non-toric intraocular lens implantation at the Hospital de Olhos de Cascavel - PR in May 2016. Results: Within our sample of 37 eyes approached with VERION® assistance, 43% of study participants (n=16) had reduced initial astigmatism, including elimination of more severe degrees of astigmatism (≥2.5 D). Conclusion: The impact of VERION® was significant as it allowed the correction of previous astigmatism of a part of the sample. In eyes that had surgically induced astigmatism, this complication was less clinically relevant compared to conventional technique corneal incisions.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Aged, 80 and over , Astigmatism/complications , Astigmatism/epidemiology , Cataract Extraction/adverse effects , Phacoemulsification/methods , Surgery, Computer-Assisted , Retrospective Studies , Corneal Topography/methods , Observational Study
17.
Acta Medica Philippina ; : 567-576, 2020.
Article in English | WPRIM | ID: wpr-877353

ABSTRACT

@#Objectives. Refractive changes have been studied after muscle surgery in literature but most results are inconsistent. It has been postulated that changes in corneal tension after muscle surgery may cause a change in corneal curvature resulting in the change in refraction postoperatively. This study investigated changes in corneal topography and clinical refraction after horizontal rectus muscle surgery. Methods. Twenty-one eyes of 13 patients underwent horizontal rectus muscle surgery via limbal approach. Manifest refraction, cycloplegic refraction, and corneal topography were measured preoperatively, and postoperatively at day 1 and weeks 1, 2, 4 and 8. The proportion of subjects with at least 0.5 D change from preoperative measurements and the proportion of subjects that needed new prescription postoperative were also computed. Analysis of the results were done using the Friedman test to identify significant differences among measurements at different time periods with post-hoc analysis utilized to identify specific time periods with significant changes from preoperative measurements. Results. Mean corneal keratometry, horizontal, vertical, and oblique astigmatism, obtained topographically showed no significant difference from preoperative measurements. The statistically significant difference in corneal astigmatism in the recession group at day 1, week 4 and week 8 postoperatively was not confirmed when converted to power vectors in both vertical/horizontal (J0) and oblique (J45) astigmatism. Clinical refraction showed a transient myopic shift in spherical equivalent, statistically significant only on postoperative day 1 in the recession group. There was no statistically significant difference in clinical astigmatism. There was ≥ 0.5 D change in spherical equivalent in 60% in both study groups by the end of follow-up. The shift in J0 was more than 10% in the recession group. More than fifty percent (52.4%) needed new prescription for glasses. Conclusion. No statistically significant change in corneal topography and clinical refraction following horizontal rectus muscle surgery were found. Patients should still be refracted at least 2 weeks postoperatively to check if there is a need for change in prescription glasses to improve alignment and/or improve vision.


Subject(s)
Astigmatism , Oculomotor Muscles , Ophthalmologic Surgical Procedures , Vision Tests , Strabismus
18.
Arq. bras. oftalmol ; 82(5): 377-380, Sept.-Oct. 2019. tab, graf
Article in English | LILACS | ID: biblio-1019430

ABSTRACT

ABSTRACT Purpose: To assess the frequency of corneal astigmatism before cataract surgery in a Brazilian sample. Methods: This clinic-based cross-sectional study was conducted at the Bonsucesso Federal Hospital, Rio de Janeiro, Brazil. Charts of patients who underwent cataract surgery over a two-year period were retrospectively reviewed, and preoperative keratometric measurements were collected and analyzed. Results: A total of 1707 eyes of 1045 patients were enrolled. The corneal astigmatism was less than 1.0 D in 971 eyes (56.9%), 1.0-1.99 D in 496 eyes (29.1%), 2.0-2.99 D in 157 eyes (9.2%), and more than 3.0 D in 83 eyes (4.9%). The mean corneal astigmatism was 0.92 ± (SD) 0.96 D (range 0 - 10.25 D). Conclusion: Over 40% of the patients undergoing cataract surgery enrolled in this study had more than 1.0 D of corneal astigmatism and may benefit from the use of toric intraocular lenses. These data can be useful for planning to make this technology available for patients.


RESUMO Objetivo: Avaliar a prevalência do astigmatismo corneano antes da cirurgia de catarata em pacientes brasileiros. Métodos: Este estudo transversal de base clínica foi realizado no Hospital Federal de Bonsucesso, Rio de Janeiro, Brasil. Os prontuários de pacientes submetidos à cirurgia de catarata durante um período de dois anos foram revisados retrospectivamente, e as medidas ceratométricas pré-operatórias foram coletadas e analisadas. Resultados: Um total de 1.707 olhos de 1045 pacientes foram incluídos. O astigmatismo corneano foi menor que 1,0 D em 971 olhos (56,9%), 1,0-1,99 D em 496 olhos (29,1%), 2,0-2,99 D em 157 olhos (9,2%) e mais de 3,0 D em 83 olhos (4,9%). A média do astigmatismo corneano foi de 0,92 ± (SD) 0,96 D (intervalo 0-10,25 D). Conclusão: Mais de 40% dos pacientes estudados submetidos à cirurgia de catarata incluídos neste estudo tinham mais de 1,0 D de astigmatismo corneano e podem se beneficiar do uso de lentes intraoculares tóricas. Esses dados podem ser úteis no planejar a disponibilização dessa tecnologia para os pacientes.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Astigmatism/epidemiology , Cataract/complications , Cataract Extraction , Corneal Diseases/epidemiology , Brazil/epidemiology , Prevalence , Cross-Sectional Studies , Retrospective Studies , Cornea/physiopathology , Hospitals, Public
19.
Rev. cuba. oftalmol ; 32(2): e723, abr.-jun. 2019. tab
Article in Spanish | LILACS | ID: biblio-1093691

ABSTRACT

RESUMEN Objetivo: Identificar las características del astigmatismo en los niños. Métodos: Se realizó un estudio descriptivo y transversal en pacientes atendidos en el Servicio de Oftalmología Pediátrica del Instituto Cubano de Oftalmología Ramón Pando Ferrer en el período de junio del año 2016 a diciembre de 2017. La muestra estuvo conformada por 61 niños (122 ojos) con astigmatismo, quienes cumplieron los criterios de inclusión y exclusión. Las variables del estudio fueron la edad, el sexo, el tipo de astigmatismo, los síntomas, la agudeza visual sin y con corrección, el cilindro refractivo, el cilindro topográfico y el equivalente esférico. Resultados: El astigmatismo mixto fue el más relevante en todas las edades, y el sexo no fue significativo. El síntoma más referido fue la dificultad para ver de cerca (33 pacientes) para un 54,9 por ciento y en edades de 6 a 9 años. La media más baja de la agudeza visual fue 0,22 para el astigmatismo miópico compuesto y la mejor agudeza visual corregida fue para el astigmatismo miópico simple (0,94). La media del cilindro refractivo y topográfico fue de 2,71 y 2,45 dioptrías respectivamente. Los valores topográficos y refractivos mostraron diferencias significativas en los astigmatismos miópico compuesto y mixto (p= 0,002). Los equivalentes esféricos más cercanos a la emetropía (-0,5 a 0,5) presentaron la media más alta de agudeza visual sin corrección. Conclusión: El astigmatismo miópico compuesto afecta más la agudeza visual sin corrección y presenta diferencias entre el cilindro refractivo y topográfico, al igual que el astigmatismo mixto(AU)


ABSTRACT Objective: Describe the characteristics of astigmatism in children. Methods: A descriptive cross-sectional study was conducted of patients cared for at the Pediatric Ophthalmology Service of Ramón Pando Ferrer Cuban Institute of Ophthalmology from June 2016 to December 2017. The sample was 61 children (122 eyes) with astigmatism who met the inclusion and exclusion criteria. The study variables were age, sex, type of astigmatism, symptoms, visual acuity with and without correction, refractive cylinder, topographic cylinder and spherical equivalent. Results: Mixed astigmatism was the most relevant type in all age groups, whereas sex was not significant. The symptom most frequently reported was difficulty to see up close: 33 patients (54.9 percent) in the 6-9 years age group. The lowest visual acuity mean was 0.22 for compound myopic astigmatism, whereas the best corrected visual acuity corresponded to simple myopic astigmatism (0.94). Mean refractive and topographic cylinder was 2.71 and 2.45 diopters, respectively. Topographic and refractive values were significantly different in compound myopic and mixed astigmatism (p= 0.002). The spherical equivalents closest to emmetropia (-0.5 to 0.5) exhibited the highest mean visual acuity without correction. Conclusions: Compound myopic astigmatism affects uncorrected visual acuity more markedly and presents differences between the refractive and the topographic cylinder just like mixed astigmatism(AU)


Subject(s)
Humans , Male , Female , Child , Astigmatism/diagnostic imaging , Retinoscopes/adverse effects , Symptom Assessment/methods , Epidemiology, Descriptive , Cross-Sectional Studies , Observational Study
20.
Arq. bras. oftalmol ; 82(1): 68-71, Jan.-Feb. 2019. graf
Article in English | LILACS | ID: biblio-973863

ABSTRACT

ABSTRACT The authors describe an unusual association between posterior keratoconus and iris atrophy, confirmed by a complete ocular evaluation, scheimpflug imaging and pachymetric curve. A hypothesis for concomitant findings is discussed.


RESUMO Os autores descrevem a rara associação entre ceratocone posterior e atrofia de íris, confirmada por avaliação oftalmológica completa, imagens de scheimpflug e curva paquimétrica. Sugere-se uma hipótese que explique a concomitância de ambas as alterações.


Subject(s)
Humans , Female , Middle Aged , Iris/pathology , Iris Diseases/complications , Keratoconus/complications , Astigmatism/complications , Astigmatism/pathology , Atrophy , Amblyopia/complications , Amblyopia/pathology , Corneal Topography/methods , Corneal Pachymetry/methods , Keratoconus/pathology
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