Flap invertido de membrana limitante interna en agujero macular grande / Inverted internal limiting membrane flap technique in large macular hole

RESUMEN El agujero macular es un desorden de la interface vitreorretinal definido como un defecto de espesor completo desde la membrana limitante interna hasta los segmentos externos de los fotorreceptores, que normalmente involucra a la fóvea. Con el desarrollo de la tomografía de coherencia óptica se han mejorado el diagnóstico, el tratamiento y el seguimiento de las enfermedades de la interface vitreorretinal, entre ellas el agujero macular. La vitrectomía pars plana es la técnica quirúrgica de elección para el agujero macular. Se presenta una paciente de 75 años, pseudofáquica, con mejor agudeza visual corregida en el ojo derecho de 0,1 Snellen. Se diagnostica agujero macular grande (810 µm) según su mínima apertura, con 8 meses de evolución. Se realizó vitrectomía pars plana, el levantamiento de la hialodes posterior, el flap invertido de membrana limitante interna, el uso de hexafluoruro de azufre en mezcla 20 por ciento y el posicionamiento de la paciente 24-72 horas. Se logró el cierre anatómico del agujero macular y la recuperación visual de 0,6 Snellen a los seis meses del tratamiento quirúrgico(AU)

ABSTRACT Macular hole is a disorder of the vitreous-retina interface defined as a full-thickness defect from the internal limiting membrane to the external segments of photoreceptors which typically involves the fovea. The development of optical coherence tomography has improved the diagnosis, treatment and follow-up of vitreous-retina interface diseases, among them macular hole. Pars plana vitrectomy is the surgical technique of choice for macular hole. A case is presented of a female 75-year-old pseudophakic patient with best corrected right eye visual acuity of 0.1 on the Snellen chart. Large macular hole is diagnosed (810 µm) according to its minimum opening, of 8 month's evolution. The following procedures were performed: pars plana vitrectomy, posterior hyalode lifting, inverted internal limiting membrane flap, use of sulfur hexafluoride in a 20% mixture, and positioning of the patient for 24-72 hours. Anatomical closure of the macular hole and a visual recovery of 0.6 Snellen were achieved six months after surgery(AU)

Evaluación por tomografía de coherencia óptica del ojo contralateral en pacientes con agujero macular idiopático / Optical coherence tomography evaluation of the contralateral eye of patients with idiopathic macular hole

Objetivo: identificar la aparición de signos tempranos para el desarrollo de agujero macular idiopático en el ojo contralateral, mediante tomografía de coherencia óptica. Métodos: se realizó un estudio longitudinal, prospectivo-descriptivo de serie de casos. Se estudiaron 208 ojos de 104 pacientes con diagnóstico de agujero macular idiopático atendidos en la consulta externa del Servicio de Retina del Instituto Cubano de Oftalmología "Ramón Pando Ferrer", entre diciembre del año 2008 y diciembre de 2011. Los pacientes fueron estudiados posteriormente por un periodo de cinco años. Se evaluaron las variables demográficas, la agudeza visual mejor corregida, los estadios de agujero macular por tomografía de coherencia óptica y se determinó la estabilidad, la progresión o la regresión de los hallazgos al año y a los cinco años en el ojo contralateral. En el análisis estadístico se empleó el porcentaje y las comparaciones de frecuencias, para lo cual se utilizó el estadígrafo Chi cuadrado con un nivel de significación del 95 por ciento. Resultados: la edad promedio fue de 65,8 y predominó el sexo femenino. El 43,3 por ciento del ojo contralateral tenía alteraciones en la interfase vitreomacular al inicio del estudio. En la evolución al año y a los cinco años se observaron diferencias significativas (p= 0,000) en la distribución de casos en los diferentes estadios. Al año se mostró estabilidad en el 78,3 por ciento comparado con el 54,6 por ciento a los cinco años. La progresión a estadios más avanzados fue escasa y similar en los dos periodos de estudio (8,2 y 7,2 por ciento respectivamente). Hubo regresión de un 13,4 por ciento al año y 38,1 por ciento a los cinco años. El desprendimiento posterior del vítreo completo lo presentaron más del 60 por ciento de los ojos al final del estudio. Desarrollaron agujero macular idiopático de espesor completo el 4,8 por ciento de los ojos contralaterales. Existió disminución de la visión en aquellos pacientes con progresión a estadios más avanzados (p= 0,001). Conclusiones: la tomografía de coherencia óptica resulta un método diagnóstico efectivo para la evaluación de los cambios anatómicos en los pacientes con agujero macular idiopático. Es necesario el seguimiento periódico para lograr una conducta quirúrgica temprana y una recuperación visual óptima, ya que se trata del segundo ojo afectado(AU)

Objective: identify the appearance of early signs of the development of idiopathic macular hole in the contralateral eye using optical coherence tomography. Methods: a prospective longitudinal descriptive study was conducted of a case series. The study sample was 208 eyes of 104 patients diagnosed with idiopathic macular hole attending outpatient consultation at the Retina Service of Ramón Pando Ferrer Cuban Institute of Ophthalmology from December 2008 to December 2011, after which period the patients were followed-up for five years. Evaluation was carried out of demographic variables, best corrected visual acuity and macular hole stage by optical coherence tomography, determining the stability, progression or regression of findings one and five years later in the contralateral eye. Statistical analysis was based on percentage and frequency comparisons, using the chi square statigram with a significance level of 95 percent. Results: mean age was 65.8 years. Female sex prevailed. At the start of the study, 43.3 percent of the contralateral eyes presented alterations in the vitreo-macular interface. Significant differences were found between evolution at one and five years (p= 0.000) regarding the distribution of cases in the various stages. Stability was 78.3 percent at one year and 54.6 percent at five. Progression to more advanced stages was scant, with similar values in the two study periods (8.2 percent and 7.2 percent, respectively). Regression was 13.4 percent at one year and 38.1 percent at five. Posterior detachment of the entire vitreous was present in more than 60 percent of the eyes at the end of the study. Full thickness idiopathic macular hole developed in 4.8 percent of the contralateral eyes. There was vision reduction in patients with progression to more advanced stages (p= 0.001). Conclusions: optical coherence tomography is an effective diagnostic method to evaluate anatomical changes in patients with idiopathic macular hole. Periodic follow-up is required for early determination of the most appropriate surgical management to achieve optimal visual recovery, since this is the second eye affected(AU)

Bilateral Macula-involving Metastatic Infection Resulting from Septic Embolization

No abstract available.

Fechamento espontâneo de buraco de mácula em olhos previamente vitrectomizados: relato de dois casos / Spontaneous closure of macular hole after pars plana vitrectomy: report of two cases

O fechamento espontâneo de buraco de mácula de espessura total é um fenômeno raro, especialmente em olhos vitrectomizados. Descrevemos nesse relato dois casos com essa apresentação. No primeiro caso, notou-se o buraco de mácula 1 mês após vitrectomia por membrana epirretiniana e, no segundo, 3 semanas após vitrectomia por descolamento de retina regmatogênico. O fechamento desses buracos ocorreu espontaneamente 2 meses e 1 mês após sua documentação, respectivamente. Feita a revisão bibliográfica e propostas teorias para explicar esta evolução atípica, o entendimento deste fenômeno pôde nos ajudar a refinar a indicação cirúrgica desta patologia.

The spontaneous closure of a full-thickness macular hole (MH) developed after vitrectomy is very uncommon. We report a small series of cases (two patients) with this presentation. The first patient developed a MH 1 month after vitrectomy for an epirrretinal membrane and, the second one, 3 weeks after vitrectomy for rhegmatogenous retinal detachment. The MHs resolved spontaneously 2 months and 1 month after their documentation by optical coherence tomography(OCT), respectively. In this case report, we review the literature on spontaneous closure of MHs and discuss possible mechanisms for this rare event.

Bilateralidad en agujeros maculares. Reporte de serie de casos / Bilateral macular holes. A case series

Propósito. Reportar la bilateralidad de los agujeros maculares, su patogenia, manejo e implicaciones. Método. Retrospectivo, observacional en Institución Oftalmológica en Colombia con reporte de seis pacientes bilateralmente afectados, en quienes se realizó examen ocular completo utilizando técnicas diagnósticas vitreo-retinianas como fluoroangiografía y tomografía óptica coherente de dominio en tiempo y espectral. Resultados. En ausencia de cirugías vitreo-retinianas, los resultados fueron de tipo observacional en el seguimiento que se detalla en las historias clínicas. Conclusiones. El agujero macular lamelar puede ser bilateral, siendo importante reconocer su incidencia, patogénesis, manejo e implicaciones.

Purpose. To report bilaterality of macular holes, pathogenesis, management and implications. Method. Retrospective, observational, case series design in a Colombian Ophthalmological Institution, reporting five patients bilaterally affected. Th ey underwent to complete ocular examination and vítreo-retinal imaging diagnostic techniques as fluorescein angiography, time domain and spectral domain optical coherence tomography. Results. In absence of ocular surgeries, results were mainly observed on long time follow-up of five cases of bilateral lamellar macular holes. Conclusions. Macular holes can be bilateral and it is important the recognition of their incidence, pathogenesis, management and future implications.

Macular Hole Formation after Pars Plana Vitrectomy for the Treatment of Valsalva Retinopathy: A Case Report

We report a case of complete surgical resolution of Valsalva retinopathy that manifested as a premacular hemorrhage involving a membrane followed by a macular hole (MH) resulting from the first vitrectomy. A 20-year-old female patient was referred to our hospital due to sudden vision loss in the left eye. Her best-corrected visual acuity (BCVA) in the left eye was hand motion. Fundus photographs and optical coherence tomography (OCT) revealed a premacular hemorrhage. Nine weeks later, the BCVA in the left eye had returned to 20 / 100 and the premacular hemorrhage had completely resolved, but residual sub-internal limiting membrane deposits and a preretinal membrane were present. The preretinal membrane was removed by core vitrectomy and preretinal membrane peeling, but the foveal deposits could not be excised. Two weeks after the first vitrectomy, the deposits resolved spontaneously, but a full-thickness MH was present. Six months after a second vitrectomy with fluid-gas exchange, the BCVA in the left eye had improved to 20 / 25 and OCT showed that the MH had closed. This case illustrates the possibility of MH formation following vitrectomy for Valsalva retinopathy.

Macular Hole Formation after Pars Plana Vitrectomy for the Treatment of Valsalva Retinopathy: A Case Report

We report a case of complete surgical resolution of Valsalva retinopathy that manifested as a premacular hemorrhage involving a membrane followed by a macular hole (MH) resulting from the first vitrectomy. A 20-year-old female patient was referred to our hospital due to sudden vision loss in the left eye. Her best-corrected visual acuity (BCVA) in the left eye was hand motion. Fundus photographs and optical coherence tomography (OCT) revealed a premacular hemorrhage. Nine weeks later, the BCVA in the left eye had returned to 20 / 100 and the premacular hemorrhage had completely resolved, but residual sub-internal limiting membrane deposits and a preretinal membrane were present. The preretinal membrane was removed by core vitrectomy and preretinal membrane peeling, but the foveal deposits could not be excised. Two weeks after the first vitrectomy, the deposits resolved spontaneously, but a full-thickness MH was present. Six months after a second vitrectomy with fluid-gas exchange, the BCVA in the left eye had improved to 20 / 25 and OCT showed that the MH had closed. This case illustrates the possibility of MH formation following vitrectomy for Valsalva retinopathy.

Macular Hole Formation in Rhegmatogenous Retinal Detachment after Scleral Buckling

PURPOSE: To describe early macular hole (MH) development in rhegmatogenous retinal detachment (RRD) after scleral buckling (SB) based on optical coherence tomography (OCT) findings. METHODS: The medical records and spectral domain OCT images of patients in whom MH developed after RRD repair were evaluated retrospectively. RESULTS: A postoperative MH was detected in five eyes that underwent SB during a 6-year period. All had fovea-off RRD without MH at the time of surgery. OCT showed partial loss of the inner retina with a preserved photoreceptor layer in early postoperative days. On average, 7 days (range,5 to 8 days) after surgery, outer retinal tissues disappeared, resulting in the full-thickness MH. CONCLUSIONS: Serial OCT findings revealed that partial-thickness lamellar holes progressed to full-thickness MHs, which were formed by the degeneration of the outer retina in eyes with preceding loss of the glial cone in the fovea.

Bilateral Macular Hole Following Myopic Photorefractive Keratectomy

A 42-year-old man was admitted to our clinic complaining of visual distortion in his left eye two months after bilateral myopic photorefractive keratectomy (PRK). Macular optical coherence tomography (OCT) showed a stage II macular hole in the left eye. Simultaneous OCT in the right eye showed vitreous traction and distortion of the outer retina. One month later, the patient underwent vitrectomy for the left eye, and the macular hole was closed. Two months after that, the patient complained of visual distortion in the right eye, and OCT revealed increased traction and accentuated outer retinal distortion indicating a stage IB macular hole. Traction attenuated later without any intervention. The short interval between PRK and hole formation, bilateral involvement, and the moderate refractive error in this case highlight the possible role of PRK in aggravating vitreoretinal interface abnormalities. We recommend the addition of PRK to the list of procedures that may be associated with the formation of a macular hole.

Relación estructura función en la detección de daño retinal por cloroquina / Relation of structure and function in detecting the retinal damage due to chloroquine

Objetivo: determinar la utilidad de la microperimetría y la tomografía óptica coherente en la detección de daño retinal subclínico por cloroquina. Métodos: estudio prospectivo, observacional y analítico en pacientes consumidores de cloroquina, atendidos en la consulta de Neuroftalmología del Instituto Cubano de Oftalmología Ramón Pando Ferrer, entre septiembre 2010 y octubre 2011. Fueron incluidos 44 ojos. Se realizaron exámenes para evaluar función (psicofísica visual y microperimetría) y estructura (biomicroscopia y tomografía óptica coherente). Resultados: la edad promedio fue de 43 años con una dosis acumulada de cloroquina de 182 g y un tiempo de consumo inferior a cinco años. Existió relación significativa entre la dosis acumulada y las variables siguientes: visión del color (-0,495; p= 0,001), grosor retinal peripapilar temporal (-0,353; p= 0,019) e inferior (-0,336; p= 0,026), macular central (-0,652; p= 0,000) y sensibilidad retinal por microperimetría (-0,436; p= 0,003) con alteraciones funcionales y estructurales en relación con el incremento de la dosis acumulada. Conclusiones: se demostró que es posible detectar daño retinal funcional temprano mediante microperimetría y tomografía óptica coherente en pacientes consumidores de cloroquina, en presencia de otros estudios funcionales y biomicroscopia normales. Unido a la tomografía óptica coherente el microperímetro puede constituir una útil herramienta para pesquisa de toxicidad retiniana

Objective: to determine the usefulness of microperimetry and of the optical coherence tomography in the detection of subclinical retinal damage due to chloroquine. Methods: prospective, observational and analytical study in patients taking chloroquine, who were seen at the Neuro-ophthalmology service of "Ramón Pando Ferrer" Institute of Ophthalmology from September 2010 through October 2011. Forty four eyes were included. Tests were performed to assess function (visual psychophysics and microperimetry) and structure (biomicroscopy and optical coherence tomography). Results: mean age was 43 years with a cumulative dose of 182 g and less than 5 years taking this drug. There was significant correlation between the cumulative dose of chloroquine and the following variables: color vision (-0.495, p = 0.001), temporal peripapillary retinal thickness (-0.353, p= 0.019) and lower (-0.336, p = 0.026), central macular (-0.652, p = 0.000) and retinal sensitivity by microperimetry (-0.436, p= 0.003) with functional and structural changes related to the increase in cumulative dose. Conclusions: it was demonstrated that it is possible to detect early functional retinal damage by using microperimetry and optical coherence tomography in patients taking chloroquine, despite normal results of other functional studies and of biomicroscopy. The combination of microperimetry and optical coherence tomography may be a useful screening tool for retinal toxicity

Surgical Removal of Retained Subfoveal Perfluorocarbon Liquid through a Therapeutic Macular Hole with Intravitreal PFCL Injection and Gas Tamponade

We report two cases of surgical removal of a retained subfoveal perfluorocarbon liquid (PFCL) bubble through a therapeutic macular hole combined with intravitreal PFCL injection and gas tamponade. Two patients underwent pars plana vitrectomy with PFCL injection for rhegmatogenous retinal detachment. In both cases, a retained subfoveal PFCL bubble was noticed postoperatively by funduscopy and optical coherence tomography. Both patients underwent surgical removal of the subfoveal PFCL through a therapeutic macular hole and gas tamponade. The therapeutic macular holes were completely closed by gas tamponade and the procedure yielded a good visual outcome (best-corrected visual acuity of 20 / 40 in both cases). In one case, additional intravitreal PFCL injection onto the macula reduced the size of the therapeutic macular hole and preserved the retinal structures in the macula. Surgical removal of a retained subfoveal PFCL bubble through a therapeutic macular hole combined with intravitreal PFCL injection and gas tamponade provides an effective treatment option.

Microperimetry and optical coherence tomography in a case of traumatic macular hole and associated macular detachment with spontaneous resolution.

The association of macular detachment with posttraumatic macular hole is a known but rare occurrence. Spontaneously occurring resolution of the detachment and closure of the macular hole has been reported only once in the literature. We describe a similar rare event in a young male, the documentation of which was done serially by microperimetry (MP) and optical coherence tomography (OCT). A 17-year-old male presented with a decrease in vision following a closed globe injury to the left eye. A coexisting macular hole and macular detachment were detected in the affected eye. Serial follow-up with OCT and MP documented complete resolution of the macular hole and the macular detachment within 1 week of presentation. The case highlights that spontaneous resolution of traumatic macular hole and related macular detachment may occur and a waiting period is advisable before undertaking any corrective surgical procedure. The pathophysiologic mechanisms of causation and the resolution of posttraumatic macular hole-related retinal detachment are discussed.

Morphological and functional changes in spectral domain optical coherence tomography and microperimetry in macular microhole variants: Spectral domain optical coherence tomography and microperimetry correlation.

Purpose: To evaluate the relationship between the morphology and retinal function of macular microhole (MMH) variants. Materials and Methods: We evaluated 12 eyes of 11 patients with defects in the IS/OS junction of photoreceptor layer with SD-OCT. All patients underwent comprehensive ophthalmic examination including spectral domain optical coherence tomography (SD-OCT) and microperimetry. Results: The mean logMAR visual acuity in the affected eye was 0.15 ± 0.17 (range 0.00–0.5). Mean horizontal diameter of the MMH was 163 ± 99 μm; the mean retinal sensitivity in the area corresponding to the MMH was 13.79 ± 4.6 dB. Negative correlation was found between the MMH diameter and the retinal sensitivity (r = -0.65, p = 0.02). Three morphological patterns of MMH variants were recognized on SD-OCT, which did not differ in retinal sensitivities. Conclusion: We described and classified the MMH variants and made an assessment on the physiological functions using microperimeter.

Algunas consideraciones actuales sobre la diagnosis del agujero macular idiopático / Some current considerations on the diagnosis of the idiopathic macular hole

El agujero macular idiopático constituye la causa más frecuente de consulta oftalmológica por disminución lenta y progresiva de la visión central. La introducción de nuevas tecnologías, como la tomografía de coherencia óptica, la microperimetría y los estudios de autofluorescencia permiten conocer mejor esta enfermedad y posibilitan no solo una mayor recuperación morfológica y funcional de los pacientes intervenidos quirúrgicamente, sino el seguimiento clínico del ojo contralateral. Se realizó una revisión exhaustiva de la bibliografía biomédica sobre el tema con vistas a crear un importante material de consulta para especialistas y personal en formación acerca de esta alteración ocular y poder valorar más rigurosamente a las personas dañadas por sus efectos.

The idiopathic macular hole constitutes the most frequent cause of visit to the ophthalmological department due to a slow and progressive decrease of the central vision. The introduction of new technologies, as the optical coherence tomography, the microperimetry and the self fluorescence studies allow to know better this disease and they not only facilitate a greater morphological and functional recovery of the patients surgically treated, but also the clinical follow up of the contralateral eye. An exhaustive review of the biomedical literature on the topic was carried out aimed at creating an important study material for specialists and training personal about this eye alteration and to be able to evaluate more rigorously patients damaged by its effects.

Macular hole in Behçet's disease.

Objective: To investigate the clinical features, prevalence, role of surgical intervention and the visual prognosis of macular holes (MH) in patients with Behcet's disease (BD). Materials and Methods: Retrospective study of patients with BD and MH from January 1998 to November 2008. Results: Out of 159 patients, 21 eyes of 17 patients were identified with MH. The mean age was 38.59 (range 23-61) years and the mean follow-up period was 5.1 years (range 13-164 months). The prevalence of MH was 7%. Visual acuity (VA) at the time of presentation ranged from 20/70 to hand-motion. Optical coherence tomography (OCT) findings revealed intraretinal cysts at the edge of the MH. The mean size of MH was 983.6 um; 52% had elevated edges, 43% had flat edges and only one eye (5%) was closed postoperatively. Fluorescein angiography (FA) was consistent with macular ischemia in 76% of the cases. Human leukocyte antigen (HLA) B51 association was found in 14 of the 15 patients investigated. Six patients (out of 17) underwent pars plana vitrectomy. The final VA on their last follow-up ranged from 20/70 to 2/200. Surgical intervention for MH did not result in any visual improvement as compared to non-operated eyes. One patient lost vision completely due to elevated intraocular pressure post vitrectomy and silicon oil tamponade. Conclusions: MH in patients with BD may lead to significant visual disability. Surgical intervention does not seem to have any potential beneficial effect on the VA, probably due to significant macular ischemia and sequelae from the ocular inflammation.

Spectral domain optical coherence tomography features of multiple subfoveal retinal pigment epithelial tears after intravitreal bevacizumab.

Retinal pigment epithelial (RPE) tear has been described to occur spontaneously, after laser photocoagulation and in recent times, after intravitreal injection of anti-vascular endothelial growth factor (VEGF) agents. In the latter case, the rapid contraction of the choroidal vascular membrane underneath a serous RPE detachment is believed to be the underlying cause. Preservation of good visual acuity after the occurrence of RPE tear with continued use of intravitreal VEGF agents has been reported. In this case report, we describe the occurrence of multiple RPE tears with the use of intravitreal bevacizumab and also correlate the preservation of visual acuity with features seen on spectral domain optical coherence tomography.

Microperimetría MP1 en agujero macular idiopático / Microperimetry MP1 for idiopathic macular hole

OBJETIVO: Describir patrones de sensibilidad retiniana y de fijación en ojos afectados de agujero macular idiopático y ojos contralaterales con estadios 0 determinados por tomografía de coherencia óptica a 35 pacientes con agujero macular idiopático diagnosticados en consulta de retina del Instituto Cubano de Oftalmología Ramón Pando Ferrer en los años 2006 y 2007. MÉTODOS: Se le realizó a cada paciente en ambos ojos microperimetría MP1 y tomografía de coherencia óptica con el empleo del Stratus 3000 en el momento del diagnóstico. RESULTADOS: La tomografía de coherencia óptica demostró en el ojo contralateral sano la presencia de estadio 0 en 7 pacientes, que presentaron según microperimetría una ligera disminución de la sensibilidad retiniana con una media de 12,5 dB en el centro de la fóvea. Se observó la aparición de escotomas absolutos dentro de los 2 grados centrales a partir del estadio 2,y se identifica la aparición de escotomas relativos desde el estadio 0. Los estadios 0, 1a y 1b presentaron una fijación estable predominantemente central con una dispersión de un 5 por ciento fuera de los 2 grados centrales. Se observó correlación directa estadísticamente significativa entre la disminución de la sensibilidad retiniana y la disminución del grosor retiniano a nivel foveolar en el momento del diagnóstico. CONCLUSIONES: La microperimetría constituye una herramienta importante para detectar alteraciones funcionales en estadios precoces en ojos contralaterales permitiendo a su vez una valoración integral del binomio función morfología en asociación con la tomografía de coherencia óptica

OBJETIVE: To describe patterns of retinal sensitivity and fixation in eyes with idiopathic macular hole and in contralateral eyes at stage 0 determined by the optical coherence tomography in 35 patients suffering idiopathic macular hole, who had been diagnosed in the Retinal Service of Ramón Pando Ferrer Cuban Institute of Ophthalmology in 2006 and 2007. METHODS: Each patient underwent MP1 microperimetry and optical coherence tomography in his/her eyes, using Stratus 3000 at the time of diagnosis. RESULTS: The optic coherence tomography showed the stage 0 in the healthy contralateral eye of 7 patients, with a slight decrease of retinal sensitivity in the center of the fovea (mean= 12.5 db) according to the microperimetry. The occurrence of absolute scotomas within the 2 central degrees was observed from the stage II on, whereas the relative scotomas were identified from the stage 0. The stages 0, 1a and 1b had a predominantly central stable fixation with 5 percent dispersion off the 2 central degrees. A direct statistically significant correlation was found between the reduced retinal sensitivity and the decreased foveal retinal thickness at the time of diagnosis. CONCLUSIONS: Microperimetry was an important tool to detect functional alterations at initial stages in contralateral eyes, thus allowing a comprehensive morphological and functional assessment of these patients by means of the optical coherence tomography

Bilateral macular hole secondary to remote lightning strike.

We report a case of a 16-year-old girl, who was struck by lightning, and experienced blurred vision in the right eye (RE) immediately following the episode. She reported for ophthalmic evaluation two months later. Examination revealed relative afferent pupillary defect in the RE. Posterior subcapsular cataract was noted in both eyes. Fundus examination revealed macular holes and multiple areas of RPE hyperpigmentation in the periphery in both eyes. Fundus fluorescein angiography showed increased choroidal transmission with early fluorescence and late fading in the foveal region and retinal pigment epithelium (RPE) stippling in the periphery in both eyes. This is the first case report of such nature in India to the best of our knowledge.

Análise comparativa da cirurgia do buraco macular associada à remoção da membrana limitante interna com e sem coloração pela indocianina verde / Comparative analysis of macular hole surgery followed by internal limiting membrane removal with and without indocyanine green staining

OBJETIVO: Descrever comparativamente os resultados da cirurgia do buraco macular associada à remoção da membrana limitante interna com e sem a coloração pela indocianina verde. MÉTODOS: Foram avaliadas 142 cirurgias consecutivas de buraco macular com remoção de membrana limitante interna realizadas no período de janeiro de 2001 a março de 2004. Estas foram divididas em dois grupos, baseados no uso ou não da coloração da membrana limitante interna pela indocianina verde. RESULTADOS: Os grupos estudados foram semelhantes no que diz respeito ao perfil dos pacientes e estágio pré-operatório dos buracos maculares. A acuidade visual pré-operatória média foi igual a 0,12±0,15 no grupo com coloração por indocianina verde e 0,18±0,18 no grupo sem a coloração pela indocianina verde (p=0,02). A acuidade visual pós-operatória média foi igual a 0,27±0,27 no grupo com uso e 0,43±0,25 no grupo sem uso (p=0,0002). Observamos melhora da acuidade visual em 63 por cento dos casos no grupo com corante e em 80,3 por cento dos casos no grupo sem corante. O fechamento do buraco macular ocorreu em 76,5 por cento dos casos com uso de indocianina verde e em 95,1 por cento dos casos sem utilização do corante. CONCLUSÃO: As cirurgias do buraco macular com remoção da membrana limitante interna sem uso de corantes apresentam melhores resultados visuais e anatômicos quando comparadas àquelas com o auxílio da coloração pela indocianina verde. Recomendamos cautela ao utilizar a coloração com indocianina verde na cirurgia do buraco macular pelo seu possível efeito tóxico.

Quistes maculares nducidos por descarga eléctrica / Macular cyst induced by electric shock

En el presente caso se describe quistes maculares bilaterales secundarios a descarga eléctrica, los cuales fueron diagnosticados por medio de una Tomografía Óptica Coherente y donde se evidencio el diagnóstico diferencial entre quistes maculares y agujeros maculares siendo la OCT una útil herramienta en este caso.