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1.
Arch. Soc. Esp. Oftalmol ; 93(10): 497-502, oct. 2018. tab, ilus
Article in Spanish | IBECS | ID: ibc-175125

ABSTRACT

CASOS CLÍNICOS: Presentamos 10 casos de queratitis por Acanthamoeba tratados en nuestro hospital entre 2008 y 2017. Todos eran portadores de lentes de contacto. Como tratamiento todos recibieron una biguanida junto a una diamidina. En 3 casos la infección no superaba el estroma superficial, respondiendo al tratamiento tópico. En 7 alcanzaba el estroma profundo, precisando 6 de ellos una queratoplastia penetrante, 3 «en caliente» por riesgo de perforación o extensión ocular. La agudeza visual mejoró en todos los casos. CONCLUSIÓN: La profundidad de la infección al diagnóstico aparece como el principal factor de riesgo para necesitar una queratoplastia penetrante


CLINICAL CASES: Cases are presented of 10 patients with Acanthamoeba keratitis treated between 2008 and 2017. All were contact lens wearers. All of them received treatment with a biguanide combined with a diamidine. In 3 cases the infestation did not exceed the superficial stroma, responding to topical treatment. In 7, the infection reached the deep stroma, with 6 of these cases requiring penetrating keratoplasty (PKP), 3 of them therapeutic PKP because of perforation risk or ocular spreading. The visual acuity improved in all the cases. CONCLUSION: The infestation depth at the time of diagnosis appears to be the main risk factor for requiring a PKP


Subject(s)
Humans , Male , Female , Child , Adolescent , Young Adult , Adult , Middle Aged , Acanthamoeba Keratitis/diagnosis , Acanthamoeba Keratitis/drug therapy , Biguanides/therapeutic use , Diamines/therapeutic use , Eye Infections/diagnosis , Early Diagnosis , Biopsy , Acanthamoeba Keratitis/parasitology , Visual Acuity , Contact Lenses/parasitology , Eye Infections/drug therapy , Eye Infections/parasitology
2.
Arch. Soc. Esp. Oftalmol ; 92(3): 101-106, mar. 2017. ilus
Article in Spanish | IBECS | ID: ibc-160959

ABSTRACT

OBJETIVO: Evaluar la eficacia de las terapias intravítreas en casos de degeneración macular asociada a la edad (DMAE) atrófica con fluido intra- o subretiniano. MÉTODOS: Revisamos, de forma retrospectiva, las características de pacientes diagnosticados de DMAE atrófica con fluido intra- o subretiniano. Examinamos las retinografías y las imágenes de tomografía de coherencia óptica de dominio espectral analizando en ellas la presencia de fluido y su densidad. Descartamos la existencia de neovascularización coroidea mediante angiografía con fluoresceína o con verde de indocianina. RESULTADOS: Se incluyeron 14 ojos de 13 pacientes con una edad media de 72,64 años y un seguimiento medio de 80,5 semanas. Se observó fluido intrarretiniano en 6 ojos (42,9%) y fluido subretiniano en 8 ojos (57,1%). Este fluido era de alta densidad en 4 de ellos (28,5%) y de baja densidad en los otros 4 ojos (28,5%). La mejor agudeza visual corregida evaluada mediante la escala de Snellen mejoró de 0,37 inicialmente a 0,56 en la visita final (p = 0,002). El grosor macular central (en micras) disminuyó de forma significativa de 291,0 μm al inicio a 228,9μm en la visita final (p≤0,001). Del total, 8 ojos recibieron ranibizumab, 5 ojos recibieron bevacizumab y un ojo recibió triamcinolona intravítrea. CONCLUSIONES: La DMAE atrófica puede presentarse con fluido intra- o subretiniano en ausencia de neovascularización coroidea. Son necesarios estudios adicionales para analizar el valor de estos hallazgos como factor de riesgo en el desarrollo de formas avanzadas de DMAE, así como la eficacia de las terapias intravítreas


OBJECTIVE: To evaluate the efficacy of intravitreal therapies in cases of atrophic age-related macular degeneration (AMD) with subretinal or intraretinal fluid. METHODS: A retrospective review was made of the clinical charts of patients diagnosed with atrophic AMD with subretinal or intraretinal fluid. Fundus photographs and spectral-domain optical coherence tomography images were examined, and an analysis was made on the presence of fluid and its density. Neovascularisation was ruled out by fluorescein and/or indocyanine green angiography. RESULTS: The study included 14 eyes from 13 patients with a mean age of 72.64 years and a mean follow-up of 80.5 weeks. Intraretinal fluid was observed in 6 eyes (42.9%), while subretinal fluid was shown in 8 eyes (57.1%), with high density in 4 eyes (28.5%), and low density in 4 eyes (28.5%). Snellen best-corrected visual acuity improved from 0.37 at baseline to 0.56 at the final visit (P=.002). Central subfield thickness (microns) significantly decreased (P<.001) from 291.0 at baseline to 228.9 at the final visit. Eight eyes received ranibizumab, 5 eyes received bevacizumab, and one case received triamcinolone. CONCLUSIONS: Cases of atrophic AMD may present with subretinal or intraretinal fluid in the absence Neovascularisation. Further studies are required to analyse the value of this finding as a risk factor of developing advanced forms of AMD, as well as the efficacy of intravitreal therapies


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Macular Degeneration/drug therapy , Macular Degeneration/surgery , Macular Degeneration , Ranibizumab/therapeutic use , Bevacizumab/therapeutic use , Triamcinolone/therapeutic use , Tomography, Optical Coherence/instrumentation , Fluorescein Angiography/instrumentation , Tomography, Optical Coherence/standards , Tomography, Optical Coherence , Retrospective Studies , Treatment Outcome , Visual Acuity/physiology , Intravitreal Injections/instrumentation , Intravitreal Injections/methods , Tomography, Optical Coherence/methods
3.
Arch. Soc. Esp. Oftalmol ; 91(5): 209-216, mayo 2016. ilus, graf
Article in Spanish | IBECS | ID: ibc-151390

ABSTRACT

OBJETIVO: Evaluar el riesgo de progresión de la retinopatía diabética (RD) utilizando nuevas estrategias para obtener información genética en diabéticos tipo 2 (DT2) basadas en interferencia por ácido ribonucleico (ARN). MATERIAL Y MÉTODOS: Estudio multicéntrico, prospectivo de casos-controles en 132 participantes divididos en: grupo DT2 (GDT2) con RD (+RD) y sin RD (-RD) (n = 77) y grupo control (GC) (n = 55). Tras entrevista personal y examen oftalmológico, se extrajeron lágrimas para análisis molecular (expresión de micro-ARN [miARN] [miRCURY™ ARN Isolation Kit, Qiagen]). En 18 muestras (GDT2+RD = 6; GDT2-RD = 6; GC = 6) obtuvimos librerías de 137 vs. 140 pares de bases (GeneMapper, Applied Biosystems) y realizamos secuenciación de próxima generación (NGS). El programa SPSS 15.0 vehiculizó el análisis estadístico. RESULTADOS: Edad media: 67 ± 12 años en GDT2 vs. 55 ± 21 años en GC. Distribución hombres/mujeres: 51/28 en GDT2 vs. 25/30 en GC. Los antecedentes familiares de DM, cumplir dieta, fumar, beber y realizar ejercicio mostraron diferencias significativas entre grupos (p < 0,001). Con 20-25 μL de lágrimas extrajimos 9,42 ± 3,30 ng/mL de ARN purificado, con diferencias significativas entre GDT2/GC (p = 0,002) y GDT2+RD/GC (p = 0,004). La expresión lagrimal de miARN en GDT2 correlacionó directamente con: edad/obesidad/duración de DM (p < 0,05), e indirectamente con: agudeza visual (p < 0,05). Hemos identificado 14 miARN relacionados con la presencia, mecanismos patogénicos y factores de riesgo para la progresión de la RD. CONCLUSIONES: Proponemos utilizar lágrimas como fuente de información genética para la DM. Los miARN específicos implicados en desarrollo o progresión de la RD pueden utilizarse como biomarcadores moleculares y, a partir de ellos, desarrollar futuras bioterapias


OBJECTIVE: To evaluate the risk of progression of diabetic retinopathy (DR) using new strategies to obtain genetic information in type 2 diabetes (T2D) based on interfering ribonucleic acid (RNA). MATERIAL AND METHODS: A prospective multicentre case-control study of 132 participants was distributed into: T2D with (+DR) or without (-DR) (T2DG; n = 77), and a control group (CG; n = 55). After an eye examination and personal interview, tears were collected for molecular analysis (expression of microRNAs [miRNAs] (miRCURY(TM) ARN Isolation Kit, Qiagen)]. Libraries, 137 vs. 140 bp (GeneMapper, Applied Biosystems), were obtained in 18 samples (T2DG+DR = 6; T2DG-DR = 6; CG = 6) by performing next-generation sequencing (NGS). SPSS 15.0 statistical program was used to perform data analysis. RESULTS: The mean age was 67 ± 12 years in the T2DG vs. 55 ± 21 years in the CG. Distribution men/women: 25/30 in T2DG vs. 51/28 in CG. A family history of DM, diet compliance, smoking, drinking and exercise, showed significant differences between groups (P<.001). A 20-25 microlitre sample of tears contained a mean of 9.42 ± 3.30 ng/mL of purified ARN, with significant differences between T2DG/CG (P=.002) and T2DG+RD/CG (P=.004). Tear expression of miARNs in T2DG directly correlated with age/obesity/T2D duration (P<.05), and indirectly with visual acuity (P<.05). A total of 14 miRNAs related to the presence, pathogenic mechanisms and risk factors for the progression of diabetic retinopathy, were identified. CONCLUSIONS: We propose to use tears as a source of genetic information for DM. Specific miRNAs involved in DR development and/or progression can be used as molecular biomarkers, and based on these, for developing future biotherapies


Subject(s)
Humans , Male , Female , Adolescent , Young Adult , Adult , Middle Aged , Aged , RNA Interference/immunology , RNA Interference/physiology , MicroRNAs/genetics , MicroRNAs/therapeutic use , Diabetic Retinopathy/diagnosis , Diabetic Retinopathy/genetics , Diabetic Retinopathy/therapy , Biomarkers/analysis , Biomarkers/metabolism , Blindness/diagnosis , Blindness/prevention & control , Laser Coagulation/instrumentation , Laser Coagulation/methods , Laser Coagulation , Tomography, Optical Coherence/instrumentation , Tomography, Optical Coherence/methods , Tomography, Optical Coherence , Tears/physiology , Eye Diseases/complications , Multicenter Studies as Topic , Prospective Studies , Case-Control Studies , Spain
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