RESUMEN
PURPOSE: To study the evolution of idiopathic epiretinal membrane (IERM) as examined by optical coherence tomography (OCT) in the 1-mm-diameter circle centered on the fovea. METHODS: In a case series study 71 subjects (71 eyes) with idiopathic epiretinal membrane and macular thickness greater than 220-/+10 micro m were evaluated by OCT. The fellow healthy eye of 52 patients was used as the control group. The mean follow-up was 36 months. Measurements of macular thickness at baseline and at the final examination were performed. Best-corrected visual acuity was expressed as the number of letters read on the Early Treatment Diabetic Retinopathy Study chart. RESULTS: Within the inner macular central circle of 1 mm diameter the thickness of the fovea increased by an average of 12.29% (p<0.001) during follow-up in the study group while in the control group the foveal thickness decreased by -0.44% (p=0.43). The mean increase of the fovea thickness was accompanied by a modest decrease of best-corrected visual acuity from a mean 43.26 letters at baseline to a mean 39.20 letters at the last examination (p<0.001). CONCLUSIONS: In the study group the macular thickness increased during a mean follow-up period of 36 months. The average increase between the baseline and the final examination at the inner central circle of 1 mm diameter was 12.29%. Decrease of the macular thickness was not observed in any of the studied cases. The mean decrease of visual acuity was 9.4%. OCT also depicted with accuracy the changing morphology of the affected macula during the study period.
Asunto(s)
Membrana Epirretinal/diagnóstico , Membrana Epirretinal/fisiopatología , Mácula Lútea/fisiopatología , Tomografía de Coherencia Óptica/métodos , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Agudeza Visual/fisiologíaRESUMEN
PURPOSE: To evaluate by optical coherence tomography (OCT) the vitreous involvement in full thickness macular hole associated with optic disk pit maculopathy. METHODS: Two patients with optic disk pit maculopathy and full thickness macular hole underwent OCT for evaluation of vitreous involvement in the pathogenesis of the disease. Fluorescein angiography and fundus photographs were also performed. RESULTS: OCT documented the presence of vitreous traction at the edge of the full thickness macular hole in the first case and on the elevated macula in the second case. Partial posterior vitreous detachment was also noticed. CONCLUSIONS: Previously unreported OCT findings such as vitreous traction at the edge of the macular hole and on the elevated macula were found. OCT provided evidence for vitreous participation in full thickness macular hole associated with optic disk pit maculopathy. OCT was also able to show that the full thickness macular hole and optic disk pit maculopathy were probably caused by similar vitreous tractional forces.