Before revision: Differential diagnosis of cherry-red spot at macula 275px|A seeming Cherry-red spot as seen here in Tay–Sachs disease is caused by the fovea's center appearing bright red because it is surrounded by a whiter than usual area.
After revision: Differential diagnosis of cherry-red spot at macula 275px|A Cherry-red spot as seen here in Tay–Sachs disease is caused by the fovea's center appearing bright red because it is surrounded by a whiter than usual area.