10- anton's syndrome

- when bilateral infarction in the distal POSTERIOR CEREBRAL ARTERY occurs , it produces cortical blindness ( blindness with preserved pupillary light reaction ) . the patient is often unaware of the blindness and may even deny it . this is called ANTON'S SYNDROME .

-tiny islands of vision may persist and the patient may report that vision fluctuates as images are captured in the preserved portions .

- rarely only peripheral vision is lost and the central vision is spared resulting in GUN BARREL VISION.