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Functional imaging of Case 3. Kinetic perimetry (A) reveals eccentric scotomas in both eyes to the V4e and III4 test targets. The smaller/dimmer test targets are constricted to a small central island in both eyes. Full-field electroretinography (ERG) (B) shows severely depressed scotopic and photopic responses in both eyes. Multifocal ERG (C) shows subnormal macular cone responses in both eyes.
