Abbreviation:<unk> 
The first branch of internal carotid<unk>  is the ophthalmic<unk> 
More common in the elderly with carotid<unk>  disease
Restoration of blood flow within 100min may lead to complete recovery
Occlusion >240min leads to irreversible damage
5-10% of<unk>  is associated with giant cell<unk> tis
Occlusion >240min leads to irreversible damage
Embolism
Thrombosis
Temporal<unk> tis
Vasculitis
Sickle Cell Disease
Trauma
Vasospasm (migraine)
Glaucoma
Low<unk>  blood flow (carotid stenosis or hypotension)
Central retinal artery occlusion
Painful
Central retinal vein occlusion
Arteritic anterior ischemic optic neuropathy
Posterior vitreous detachment
Optic neuritis
Traumatic optic neuropathy
Temporal arteritis†