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