Abstract
Microcystic macular edema can occur after optic neuropathies of various etiologies, and is easily demonstrated by OCT. We report a cohort of patients with microcystic macular edema. All patients with optic neuropathy and microcystic macular edema were enrolled. Demographics, visual function, retinal angiographies and OCT parameters were studied. Nineteen patients (23 eyes) exhibited microcystic macular edema: 10 men/9 women, aged 17-91 years. Etiologies of optic nerve atrophy were compressive (5), inflammatory (4), glaucoma (3), ischemic (3), trauma (2), degenerative (1), and hereditary (1). Median visual acuity was 4/10 (NLP-12/10). Fluorescein angiography showed no leakage. Topography of the microcystic macular edema correlated with near infrared images but with visual field defects in only 26%. OCT parameters were all abnormal. Microcystic macular edema is a non-specific manifestation from an optic neuropathy of any etiology. The precise mechanism leading to microcystic macular edema remains unknown but trans-synaptic retrograde degeneration with Müller cells dysfunction is likely.
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