Case 8-4. Geographic Atrophy
An 85-year-old man with stable age-related macular degeneration had geographic atrophy involving the macula of his left eye without associated subretinal fluid, hemorrhage, or exudate (A), His visual acuity in this eye was counting fingers at four feet.
A sequence of horizontal OCT tomograms (B) demonstrated increased penetration of light through the atrophic region, which was most significant nasal to the fovea, leading to enhanced reflectivity from the choroid. Scan B, taken directly through the fovea, showed thinning of the neurosensory retina in the central macula.
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