నైరూప్య

Restoration of sight through ischemic treatment.

Temel Emine*

Posterior ischemic optic neuropathy (PION) is characterised by severe acute painless unilateral or bilateral loss of vision caused by ischemic damage to the retro bulbar optic nerve. It differs from anterior ischemic optic neuropathy (AION) in that it lacks the oedema of the optic nerve that characterises the more common condition. The blood supply to the retro bulbar optic nerve is distinct from the blood supply to the optic nerve head and is derived primarily from the capillary plexus.