Branch retinal vein occlusion (BRVO) is a vascular occlusive disease of the retina, caused by thrombotic occlusion of a retinal venule where it is crossed by an arteriole.

Whilst many older individuals have at some stage been told by their eye care provider that they have cataracts, fewer have had a discussion about the best time to have cataract surgery.

GCA is an important condition because it can cause profound, bilateral, and irreversible blindness. Blindness is due to involvement of the ophthalmic artery and resultant infarction of the optic nerves.