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1.
Arq Bras Oftalmol ; 87(3): e20230038, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38537047

RESUMO

PURPOSE: To assess the effect of the Coronavirus disease 2019 (COVID-19) pandemic on cataract surgery by residents who had mandatory surgical simulator training during residency. METHODS: In this retrospective, observational analytical study, the total number of cataract surgeries and surgical complications by all senior residents of 2019 (2019 class; prepandemic) and 2020 (2020 class; affected by the reduced number of elective surgeries due to the COVID-19 pandemic) were collected and compared. All residents had routine mandatory cataract surgery training on a virtual surgical simulator during residency. The total score obtained by these residents on cataract challenges of the surgical simulator was also evaluated. RESULTS: The 2020 and 2019 classes performed 1275 and 2561 cataract surgeries, respectively. This revealed a reduction of 50.2% in the total number of procedures performed by the 2020 class because of the pandemic. The incidence of surgical complications was not statistically different between the two groups (4.2% in the 2019 class and 4.9% in the 2020 class; p=0.314). Both groups also did not differ in their mean scores on the simulator's cataract challenges (p<0.696). CONCLUSION: Despite the reduction of 50.2% in the total number of cataract surgeries performed by senior residents of 2020 during the COVID-19 pandemic, the incidence of surgical complications did not increase. This suggests that surgical simulator training during residency mitigated the negative effects of the reduced surgical volume during the pandemic.


Assuntos
COVID-19 , Catarata , Internato e Residência , Humanos , Pandemias/prevenção & controle , Estudos Retrospectivos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Competência Clínica
2.
Arq. bras. oftalmol ; 87(2): e2023, 2024. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1533798

RESUMO

ABSTRACT Purpose: To assess the effect of the coronavirus disease 2019 (COVID-19) pandemic on cataract surgery by residents who had mandatory surgical simulator training during residency. Methods: In this retrospective, observational analytical study, the total number of cataract surgeries and surgical complications by all senior residents of 2019 (2019 class; prepandemic) and 2020 (2020 class; affected by the reduced number of elective surgeries due to the COVID-19 pandemic) were collected and compared. All residents had routine mandatory cataract surgery training on a virtual surgical simulator during residency. The total score obtained by these residents on cataract challenges of the surgical simulator was also evaluated. Results: The 2020 and 2019 classes performed 1275 and 2561 cataract surgeries, respectively. This revealed a reduction of 50.2% in the total number of procedures performed by the 2020 class because of the pandemic. The incidence of surgical complications was not statistically different between the two groups (4.2% in the 2019 class and 4.9% in the 2020 class; p=0.314). Both groups also did not differ in their mean scores on the simulator's cataract challenges (p<0.696). Conclusion: Despite the reduction of 50.2% in the total number of cataract surgeries performed by senior residents of 2020 during the COVID-19 pandemic, the incidence of surgical complications did not increase. This suggests that surgical simulator training during residency mitigated the negative effects of the reduced surgical volume during the pandemic.

3.
J Refract Surg ; 39(1): 56-60, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36630436

RESUMO

PURPOSE: To assess anterior, posterior, and total corneal astigmatism in a large sample of Brazilian patients. METHODS: In this retrospective cross-sectional study, all patients whose corneas were imaged with the Galilei G6 (Ziemer Ophthalmology) between January 2017 and February 2019 at HOPE Eye Hospital, in Recife, Brazil, were eligible to participate. Anterior, posterior, and total corneal astigmatism values were collected and analyzed. RESULTS: The study included 3,253 eyes of 1,919 patients. The mean magnitude of the anterior, posterior, and total corneal astigmatism was 1.50 ± 1.11, 0.34 ± 0.15, and 1.29 ± 0.98 diopters (D), respectively. Corneal astigmatism was greater than 0.50 D in the anterior cornea of 86.3% of eyes (2,807 eyes) and in the posterior cornea of 13.2% of eyes (429 eyes). Vertical alignment of the steepest corneal meridian was observed in the anterior cornea of 74.5% of eyes (2,423 eyes) and in the posterior cornea of 93.1% of eyes (3,029 eyes). The correlation between the astigmatism magnitude of the anterior and posterior cornea was strong when the steep anterior meridian was aligned vertically (r = 0.720; P < .001), and absent when it was aligned horizontally (r = 0.102; P = .036). CONCLUSIONS: Corneal astigmatism values in the Brazilian population were similar to those found in other ethnicities, suggesting that toric calculators, nomograms, coefficients of adjustment, and formulas that were developed based on astigmatism values of other populations may be used in Brazilian patients with comparable accuracy. [J Refract Surg. 2023;39(1):56-60.].


Assuntos
Astigmatismo , Doenças da Córnea , Humanos , Astigmatismo/diagnóstico , Brasil/epidemiologia , Topografia da Córnea , Estudos Retrospectivos , Estudos Transversais , Córnea
4.
J Refract Surg ; 37(7): 466-471, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34236908

RESUMO

PURPOSE: To assess the incidence and risk factors of Descemet membrane detachment due to laser application in femtosecond laser-assisted cataract surgery (FLACS). METHODS: In this retrospective case series, all patients who underwent FLACS with the LenSx system (Alcon Laboratories, Inc) were eligible to participate. The medical records were reviewed to collect data regarding potential risk factors related to Descemet membrane detachment, including patients' demographics, laser parameters, and ocular measurements. The eyes were separated into two groups based on the clinical diagnosis of Descemet membrane detachment as the femto-second laser was performing the corneal incisions. RESULTS: Five hundred ten eyes (304 patients) were included. Descemet membrane detachment occurred in 20 (3.9%) eyes of 16 (5.3%) patients. Four (1.3%) patients had a detachment in both eyes. In 16 (3.1%) eyes, the Descemet membrane detachment occurred in the secondary incision site. The eyes that had a detachment had a statistically lower mean endothelial cell density (2,193.40 ± 313.37 versus 2,385.08 ± 357.80 cells/ mm2; P = .019), and a statistically higher prevalence of corneal guttata (25.0% versus 8.8%; P = .015). None of the other analyzed variables statistically differed between the groups (P > .05). The risk of having Descemet membrane detachment was statistically higher among eyes with guttata (odds ratio = 3.47; P = .015) and in those with an endothelial cell density of less than 2,000 cells/mm2 (odds ratio = 3.26; P = .014). CONCLUSIONS: The incidence of Descemet membrane detachment due to laser application in FLACS was 3.9%, with the associated risk factors being endothelial cell density of less than 2,000 cells/mm2 and corneal guttata. [J Refract Surg. 2021;37(7):466-471.].


Assuntos
Extração de Catarata , Catarata , Terapia a Laser , Extração de Catarata/efeitos adversos , Lâmina Limitante Posterior , Humanos , Incidência , Terapia a Laser/efeitos adversos , Lasers , Estudos Retrospectivos , Fatores de Risco
5.
J Cataract Refract Surg ; 45(7): 915-918, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31174986

RESUMO

PURPOSE: To assess the prevalence of macular abnormalities not suspected by the biomicroscopic fundus examination and identified only by macular optical coherence tomography (OCT) in the preoperative evaluation for cataract surgery in a large series of Brazilian patients. SETTING: Private practice, Recife, Brazil. DESIGN: Retrospective case series. METHODS: All eyes that had cataract surgery by the same physician between August 2014 and July 2016 were eligible. Excluded were eyes with a previous diagnosis of macular abnormalities, with a suspicious biomicroscopic fundus examination, and without OCT results. Based on the preoperative macular OCT, patients were divided into the following 2 groups: those with a normal OCT and those with an abnormal OCT. RESULTS: Nine hundred fifty-two eyes (614 patients) were included in the study. Macular OCT identified abnormalities in 47 eyes (4.9%) of 44 patients (7.2%). Thirty-one eyes (3.3%) had epiretinal membrane, 7 (0.7%) had age-related macular degeneration, 4 (0.4%) had intraretinal cysts, 4 (0.4%) had a lamellar hole, and 1 (0.1%) had a macular hole. Patients with an abnormal OCT had a statistically significant higher mean age (P = .004). CONCLUSION: In the preoperative evaluation for cataract surgery in Brazilian patients, 7.2% of those with a normal biomicroscopic fundus examination had macular abnormalities that were identified only by OCT.


Assuntos
Catarata/complicações , Macula Lutea/patologia , Doenças Retinianas/epidemiologia , Tomografia de Coerência Óptica/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Extração de Catarata , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Período Pré-Operatório , Prevalência , Doenças Retinianas/etiologia , Estudos Retrospectivos , Microscopia com Lâmpada de Fenda , Acuidade Visual , Adulto Jovem
6.
Clin Ophthalmol ; 13: 311-324, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30809088

RESUMO

This project was aimed at achieving consensus on the management of astigmatism during cataract surgery by ophthalmologists from Latin America using modified Delphi technique. Relevant peer-reviewed literature was identified, and 21 clinical research questions associated with the definition, classification, measurement, and treatment of astigmatism during cataract surgery were formulated. Twenty participants were divided into seven groups, and each group was assigned three questions to which they had to respond in written form, after thoroughly reviewing the literature. The assigned questions with corresponding responses by each group were discussed with other participants in round 4 - presentation of findings. The consensus was achieved if approval was obtained from at least 80% of participants. The present paper provides several agreements and recommendations for management of astigmatism during cataract surgery, which could potentially minimize the variability in practice patterns and help ophthalmologists adopt optimal practices for cataract patients with astigmatism and improve patient satisfaction.

8.
J Cataract Refract Surg ; 43(1): 74-79, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-28317681

RESUMO

PURPOSE: To compare biometry measurements and intraocular lens (IOL) power calculations obtained by a new optical A-scan interferometer biometer (Galilei G6) (new biometer) and a partial coherence interferometer biometer (IOLMaster 500) (reference biometer). SETTING: Private practice, Recife, Brazil. DESIGN: Retrospective comparative study. METHODS: Cataract patients who had biometric measurements with the new biometer and the reference biometer were included in the study. Comparisons were performed for axial length (AL), keratometry (K), anterior chamber depth (ACD), and IOL power calculation to reach emmetropia with an Acrysof SN60WF IOL using the Haigis formula. The Pearson correlation coefficient and the 95% limits of agreement (LoA) were calculated. The paired Student t test and the Wilcoxon test were used to assess differences between devices. RESULTS: Eighty-eight eyes (88 patients) were studied. Both biometers provided statistically similar mean IOL power to reach emmetropia, AL, keratometry, and ACD measurements (P > .05). The differences in these variables did not vary as their mean values increased, and there was a strong positive correlation between the values obtained by both devices for each variable. The 95% LoA values for AL, mean keratometry, ACD, and IOL power were 0.27 mm, 1.08 diopters (D), 0.66 mm, and 1.56 D, respectively. CONCLUSIONS: The 2 devices were comparable with regard to mean IOL power, mean AL, K, and ACD measurements. However, the wide range of differences between the devices suggests they should not be used interchangeably.


Assuntos
Biometria/instrumentação , Interferometria/instrumentação , Lentes Intraoculares , Óptica e Fotônica , Adulto , Idoso , Idoso de 80 Anos ou mais , Câmara Anterior/anatomia & histologia , Comprimento Axial do Olho/anatomia & histologia , Córnea/anatomia & histologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Facoemulsificação , Padrões de Referência , Estudos Retrospectivos
9.
Cornea ; 35(11): 1404-1409, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27617868

RESUMO

PURPOSE: To investigate potential differences in predictability, efficacy, and safety of corneal excimer laser to correct residual myopia, hyperopia, and astigmatism in eyes previously implanted with multifocal intraocular lenses using distinct optical surfaces and platforms for multifocality. METHODS: This prospective comparative study included 37 eyes submitted to laser in situ keratomileusis correction for residual errors after implantation of either an apodized diffractive-refractive (Restor) or a full-diffractive (Tecnis) multifocal intraocular lens. Data analysis included investigation of predictability, efficacy, and safety of excimer laser surgery to correct residual errors. A double-angle plot, using vector analysis, was also created to evaluate predictability of astigmatism correction. RESULTS: At 6-month follow-up, statistical analyses revealed a significant improvement when comparing preoperative (0.51 ± 0.25 and 0.44 ± 0.18) and postoperative values (0.17 ± 0.10 and 0.09 ± 0.07) of uncorrected distance visual acuity (P < 0.0001 and <0.0001), preoperative (0.92 ± 0.61 and 1.02 ± 0.45) and postoperative values (0.33 ± 0.23 and 0.19 ± 0.17) of manifest refractive spherical equivalent (P = 0.0006 and <0.0001), and preoperative (-1.08 ± 0.70 and -0.65 ± 0.42) and postoperative values (-0.25 ± 0.28 and -0.14 ± 0.21) of astigmatism (P < 0.0001 and <0.0001) in eyes implanted with Restor and Tecnis, respectively. Vector analysis revealed a predictable correction of astigmatism in all groups. Ninety-two percent of total eyes achieved a manifest refractive spherical equivalent within ±0.5 of emmetropia. CONCLUSIONS: Corneal excimer laser refractive surgery seems to be equally effective to correct different residual errors, including astigmatism, in eyes implanted with intraocular lenses with various platforms for multifocality.


Assuntos
Astigmatismo/cirurgia , Hiperopia/cirurgia , Ceratomileuse Assistida por Excimer Laser In Situ/métodos , Lasers de Excimer/uso terapêutico , Lentes Intraoculares , Miopia/cirurgia , Facoemulsificação , Astigmatismo/diagnóstico , Astigmatismo/fisiopatologia , Topografia da Córnea , Feminino , Humanos , Hiperopia/diagnóstico , Hiperopia/fisiopatologia , Implante de Lente Intraocular , Masculino , Pessoa de Meia-Idade , Miopia/diagnóstico , Miopia/fisiopatologia , Estudos Prospectivos , Desenho de Prótese , Pseudofacia/fisiopatologia , Refração Ocular/fisiologia , Acuidade Visual/fisiologia
12.
Arq Bras Oftalmol ; 79(1): 1-3, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26840156

RESUMO

PURPOSE: In 2015, a twenty-fold increase in the prevalence of microcephaly in Brazil was reported, and the Ministry of Health associated this abnormal prevalence with the maternal-fetal Zika virus (ZIKV) transmission. METHODS: We assessed the ophthalmological findings of ten mothers and their infants that had been clinically diagnosed with ZIKV-related microcephaly and presented ocular abnormalities, born from May to December 2015. RESULTS: Seven mothers (70.0%) referred symptoms during pregnancy (malaise, rash and arthralgia), of which six (85.7%) were in the first trimester. At the time of exam, no ophthalmological abnormalities were identified in the mothers and they did not report ocular symptoms during pregnancy. Serology was negative in all infants for Toxoplasmosis, Rubella, Cytomegalovirus, Syphilis and Human Immunodeficiency Viruses. Ocular findings included macular alterations (gross pigment mottling and/or chorioretinal atrophy) in fifteen eyes (75.0%), and optic nerve abnormalities (hypoplasia with double-ring sign, pallor, and/or increased cup-to-disk ratio) in nine eyes (45.0%). CONCLUSIONS: Patients presented normal anterior segment and important macular and optic nerve abnormalities. Further studies will assess the visual significance of these alterations.


Assuntos
Anormalidades do Olho/virologia , Microcefalia/virologia , Complicações Infecciosas na Gravidez/virologia , Infecção por Zika virus/complicações , Adulto , Brasil , Anormalidades do Olho/patologia , Feminino , Fundo de Olho , Humanos , Recém-Nascido , Macula Lutea/anormalidades , Masculino , Oftalmoscopia/métodos , Nervo Óptico/anormalidades , Gravidez
13.
Arq. bras. oftalmol ; 79(1): 1-3, Jan.-Feb. 2016. tab, graf
Artigo em Inglês | LILACS | ID: lil-771908

RESUMO

ABSTRACT Purpose: In 2015, a twenty-fold increase in the prevalence of microcephaly in Brazil was reported, and the Ministry of Health associated this abnormal prevalence with the maternal-fetal Zika virus (ZIKV) transmission. Methods: We assessed the ophthalmological findings of ten mothers and their infants that had been clinically diagnosed with ZIKV-related microcephaly and presented ocular abnormalities, born from May to December 2015. Results: Seven mothers (70.0%) referred symptoms during pregnancy (malaise, rash and arthralgia), of which six (85.7%) were in the first trimester. At the time of exam, no ophthalmological abnormalities were identified in the mothers and they did not report ocular symptoms during pregnancy. Serology was negative in all infants for Toxoplasmosis, Rubella, Cytomegalovirus, Syphilis and Human Immunodeficiency Viruses. Ocular findings included macular alterations (gross pigment mottling and/or chorioretinal atrophy) in fifteen eyes (75.0%), and optic nerve abnormalities (hypoplasia with double-ring sign, pallor, and/or increased cup-to-disk ratio) in nine eyes (45.0%). Conclusions: Patients presented normal anterior segment and important macular and optic nerve abnormalities. Further studies will assess the visual significance of these alterations.


RESUMO Introdução: No ano de 2015, foi identificado no Brasil um aumento da prevalência de microcefalia em vinte vezes. Esta malformação foi associada pelo Ministério da Saúde à transmissão vertical do Zika vírus (ZIKV). Método: Investigamos dez lactentes com diagnóstico clínico presumido de microcefalia relacionada à ZIKV, que apresentavam anormalidades oculares, nascidos entre maio e dezembro de 2015. Resultados: Sete mães (70,0%) relataram sintomas (mal-estar, rash e artralgia) durante a gestação, sendo seis (85,7%) no primeiro trimestre. No dia da avaliação nenhuma alteração ocular foi identificada nas mães e elas não relataram sintomas oculares durante a gestação. Sorologia foi negativa para toxoplasmose, rubéola, citomegalovírus, sífilis e vírus da imunodeficiência adquirida (HIV) em todos os lactentes. Os achados oculares incluíram alterações maculares (depósito pigmentar grosseiro e/ou atrofia coriorretiniana) em 15 olhos (75,0%) e alterações do nervo óptico (hipoplasia do disco com sinal do duplo anel, palidez e/ou aumento da escavação papilar) em nove olhos (45,0%). Conclusões: Os pacientes apresentaram segmento anterior normal e importantes e anormalidades maculares e do nervo óptico. Estudos futuros vão avaliar a importância destas alterações visuais.


Assuntos
Adulto , Feminino , Humanos , Recém-Nascido , Masculino , Gravidez , Anormalidades do Olho/virologia , Microcefalia/virologia , Complicações Infecciosas na Gravidez/virologia , Infecção por Zika virus/complicações , Brasil , Anormalidades do Olho/patologia , Fundo de Olho , Macula Lutea/anormalidades , Oftalmoscopia/métodos , Nervo Óptico/anormalidades
14.
J Cataract Refract Surg ; 41(10): 2242-50, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26703301

RESUMO

PURPOSE: To assess the repeatability and agreement of corneal power and astigmatism obtained from the Cassini point-source color light-emitting diode (LED) topographer, Humphrey Atlas 9000 Placido-based corneal topographer, and Lenstar LS-900 low-coherence reflectometer in normal eyes. SETTING: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA. DESIGN: Evaluation of diagnostic test or technology. METHODS: Consecutively enrolled patients with normal corneas were enrolled. Three sets of measurements were obtained using the color-LED topographer, the Placido topographer, and the reflectometer. Vector analysis was used in the astigmatism analysis. The repeatability was evaluated using the within-subject standard deviation, coefficient of variation (CoV), and intraclass correlation coefficient (ICC). Agreement was verified using Bland-Altman plots. The paired Student t test was used to assess statistical significance. RESULTS: Thirty-two eyes (32 patients) were evaluated. All devices provided highly repeatable corneal power and astigmatism measurements (ICC > 0.9) except for the Placido topographer with regard to J45 (ICC = 0.721). The color-LED topographer and the reflectometer obtained similar mean values of corneal power, astigmatism magnitude, J0, and J45 (P > .05), which was also true when comparing the color-LED topographer and the Placido topographer, except for the mean corneal power (P = .0007). The Bland-Altman plots showed a wide data spread for all analyzed variables. CONCLUSIONS: The color-LED topographer provided highly repeatable corneal power and astigmatism measurements. Even though it obtained values similar to those of the reflectometer and the Placido topographer, the wide data spread discourages their interchangeable use to assess corneal power and astigmatism. FINANCIAL DISCLOSURE: Drs. Wang, Koch, and Weikert are consultants to Ziemer USA, Inc. Dr. Koch is a consultant to Abbott Medical Optics, Inc., Alcon Surgical, Inc., and i-Optics, Corp. Drs. Ventura and Al-Mohtaseb have no financial or proprietary interest in any material or method mentioned.


Assuntos
Astigmatismo/diagnóstico , Córnea/fisiopatologia , Topografia da Córnea/instrumentação , Refração Ocular/fisiologia , Idoso , Idoso de 80 Anos ou mais , Feminino , Voluntários Saudáveis , Humanos , Luz , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Reprodutibilidade dos Testes
15.
J Cataract Refract Surg ; 41(8): 1658-71, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26432123

RESUMO

PURPOSE: To evaluate and compare the performance of a point-source color light-emitting diode (LED)-based topographer (color-LED) in measuring anterior corneal power and aberrations with that of a Placido-disk topographer and a combined Placido and dual Scheimpflug device. SETTING: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas USA. DESIGN: Retrospective observational case series. METHODS: Normal eyes and post-refractive-surgery eyes were consecutively measured using color-LED, Placido, and dual-Scheimpflug devices. The main outcome measures were anterior corneal power, astigmatism, and higher-order aberrations (HOAs) (6.0 mm pupil), which were compared using the t test. RESULTS: There were no statistically significant differences in corneal power measurements in normal and post-refractive surgery eyes and in astigmatism magnitude in post-refractive surgery eyes between the color-LED device and Placido or dual Scheimpflug devices (all P > .05). In normal eyes, there were no statistically significant differences in 3rd-order coma and 4th-order spherical aberration between the color-LED and Placido devices and in HOA root mean square, 3rd-order coma, 3rd-order trefoil, 4th-order spherical aberration, and 4th-order secondary astigmatism between the color-LED and dual Scheimpflug devices (all P > .05). In post-refractive surgery eyes, the color-LED device agreed with the Placido and dual-Scheimpflug devices regarding 3rd-order coma and 4th-order spherical aberration (all P > .05). CONCLUSIONS: In normal and post-refractive surgery eyes, all 3 devices were comparable with respect to corneal power. The agreement in corneal aberrations varied. FINANCIAL DISCLOSURE: Drs. Wang, Koch, and Weikert are consultants to Ziemer Ophthalmic Systems AG. Dr. Koch is a consultant to Abbott Medical Optics, Inc., Alcon Surgical, Inc., and i-Optics Corp.


Assuntos
Astigmatismo/diagnóstico , Córnea/fisiologia , Topografia da Córnea/instrumentação , Aberrações de Frente de Onda da Córnea/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Astigmatismo/fisiopatologia , Aberrações de Frente de Onda da Córnea/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fotografação/instrumentação , Refração Ocular/fisiologia , Estudos Retrospectivos
16.
J Refract Surg ; 31(5): 338-41, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25974974

RESUMO

PURPOSE: To report femtosecond laser-assisted cataract surgeries in patients with Marfan syndrome with mild, moderate, and severe lens subluxation. METHODS: Case reports. RESULTS: Two patients with Marfan syndrome underwent femtosecond laser-assisted cataract surgery (Alcon LenSx Lasers Inc., Aliso Viejo, CA). One patient had a mild lens subluxation in one eye and a moderate lens subluxation in the fellow eye. The other patient had a severe lens subluxation in one eye. In all eyes, the laser was able to perform a circular and free-floating anterior capsulotomy and lens fragmentation. In two of the eyes it was also helpful in decreasing corneal astigmatism by making corneal intrastromal relaxing incisions. There were no postoperative complications. CONCLUSIONS: Femtosecond laser-assisted cataract surgery is an effective approach for cataract surgery in patients with Marfan syndrome with mild, moderate, and even severe lens subluxation, with the benefits of causing minimal further zonular damage and being able to treat corneal astigmatism with relaxing incisions.


Assuntos
Cápsula Anterior do Cristalino/cirurgia , Extração de Catarata/métodos , Terapia a Laser , Subluxação do Cristalino/cirurgia , Síndrome de Marfan/cirurgia , Adulto , Feminino , Humanos , Implante de Lente Intraocular , Subluxação do Cristalino/fisiopatologia , Masculino , Síndrome de Marfan/fisiopatologia , Pessoa de Meia-Idade , Refração Ocular/fisiologia , Acuidade Visual/fisiologia
17.
J Refract Surg ; 30(7): 486-91, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24983831

RESUMO

PURPOSE: To investigate the predictability, efficacy, and safety of a ReSTOR multifocal intraocular lens (IOL) (Alcon Laboratories, Inc., Fort Worth, TX). METHODS: This retrospective, noncomparative case study included 70 eyes of 44 patients implanted with a ReSTOR toric multifocal IOL (Alcon Laboratories, Inc., Fort Worth, TX). Patients were examined preoperatively and approximately 3 months postoperatively. Uncorrected and distance-corrected distance and near visual acuities were measured. Refractive and topographic astigmatism were recorded. Improvement, number of lines gained and lost, and correlation of attempted and achieved astigmatic correction values were also investigated as measurements of efficacy, safety, and predictability. RESULTS: Mean follow-up time was 2.3 ± 1.2 months. Postoperative values of uncorrected distance and near visual acuity were 0.02 ± 0.05 logMAR (20/21 ± 20/22 Snellen) and 0.01 ± 0.04 logMAR (20/20 ± 20/22 Snellen), respectively. Statistical analyses revealed a significant improvement when comparing preoperative and postoperative values of manifest refraction spherical equivalent (P < .0001), uncorrected distance visual acuity (P < .0001), and astigmatism (P < .0001); 95.7% of eyes were 20/25 or better and 100% of eyes were 20/30 or better. At the last follow-up visit, none of the examined eyes had lost any lines. One hundred percent of the eyes remained unchanged or improved after surgery. Mean postoperative manifest refraction spherical equivalent was -0.06 ± 0.27 at the last follow-up visit. The residual manifest astigmatism was 0.22 ± 0.21. There was a highly significant correlation between preoperative attempted topographic astigmatism and postoperative achieved refractive astigmatism. CONCLUSIONS: The study provides clinical evidence that the new toric multifocal IOL seems to be predictable, safe, and effective, providing satisfactory visual acuity for far and near and correcting astigmatism.


Assuntos
Astigmatismo/cirurgia , Implante de Lente Intraocular , Lentes Intraoculares , Facoemulsificação , Pseudofacia/fisiopatologia , Acuidade Visual/fisiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Astigmatismo/fisiopatologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Desenho de Prótese , Refração Ocular/fisiologia , Estudos Retrospectivos , Resultado do Tratamento
18.
Arq Bras Oftalmol ; 77(2): 125-31, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25076481

RESUMO

Correction of corneal astigmatism is a key element of cataract surgery, since post-surgical residual astigmatism can compromise the patient's uncorrected visual acuity. Toric intraocular lenses (IOLs) compensate for corneal astigmatism at the time of surgery, correcting ocular astigmatism. They are a predictable treatment. However, accurate measurement of corneal astigmatism is mandatory for choosing the correct toric IOL power and for planning optimal alignment. When calculating the power of toric IOLs, it is important to consider anterior and posterior corneal astigmatism, along with the surgically induced astigmatism. Accurate toric lens alignment along the calculated meridian is also crucial to achieve effective astigmatism correction. There are several techniques to guide IOL alignment, including the traditional manual marking technique and automated systems based on anatomic and topographic landmarks. The aim of this review is to provide an overview on astigmatism management with toric IOLs, including relevant patient selection criteria, corneal astigmatism measurement, toric IOL power calculation, toric IOL alignment, clinical outcomes and complications.


Assuntos
Astigmatismo/cirurgia , Implante de Lente Intraocular/métodos , Lentes Intraoculares , Humanos , Resultado do Tratamento , Acuidade Visual
20.
Ecancermedicalscience ; 8: 410, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24688598

RESUMO

AIMS: To determine the expression of breast metastasis suppressor 1 (BRMS1) in human uveal melanoma (UM) tissues and cell lines. In addition, we intend to establish a possible association between BRMS1 expression and the presence of metastatic disease. METHODS: Thirty-one formalin-fixed paraffin-embedded tissues from enucleated eyes of patients with UM were immunostained. Clinical-pathological data were obtained, including age, tumour location, largest dimension, cell type, and occurrence of metastasis. The expression of BRMS1 mRNA in four human UM cell lines was determined by real-time reverse transcriptase polymerase chain reaction, and protein expression was assessed by immunocytochemistry and western blot. The association between BRMS1 immunostaining and location, largest tumour dimension, and tumour cell type was determined using the correlation coefficient test. The association between BRMS1 immunostaining and the incidence of metastasis was assessed using Kaplan-Meier analysis. RESULTS: Of the 31 cases of UM, 24 (77.42%) stained positive and seven (22.58%) negative for BRMS1. From the positively stained tumours, 21 (87.50%) showed cytoplasmatic staining. Macrophages were usually positive when present in the tumour and staining intensity was generally higher than in UM cells. BRMS1 mRNA was present in all four human UM cell lines, as well as cytoplasmatic immunoexpression of BRMS1. Immunoblotting showed variable BRMS1 protein levels between the different cell lines. No statistically significant correlation was found between BRMS1 protein expression and survival (P = 0.69), tumour cell type (P = 0.68), largest tumour dimension (P = 0.75), and tumour location (P = 0.11). CONCLUSIONS: BRMS1 is expressed in UM both at the mRNA and protein level; however, neither was associated with any of the prognosticor outcome parameters that we tested.

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