McAllister and Constable 18, in 1995 first reported producing chorioretinal anastomoses experimentally in eyes with nonischemic CRVO by using high power density argon laser photo coagulation to one of the retinal veins in the lower part of the funds at least 3 disc diameter away form the optic disc. The Blue Mountains Eye Study. The possibility of still more long-term complications cannot be ruled out. Euro J Ophthalmol. 2008 Mar-Apr. 182:233-8. bravos often can occur with no pain or noticeable loss of vision.  It’s associated with severe vision loss and possibly loss of the eye. Large areas of ischemia can lead to abnormal blood vessel growth over the iris coloured part of the eye leading to neovascular glaucoma, a very painful, blinding condition resulting from high pressure in the eye. They are caused when the fluid inside your eye rubs against the retina. The usual symptom of retinal artery occlusion is a sudden, painless, persistent, substantial loss of vision in one eye.

Does individual complain of sudden onset of blurred or distorted vision in the upper or lower half or total visual field? Inc Ophthalmol. 2014 Se 23. Moreover, pan retinal photo coagulation is not a harmless procedure; it can produce loss of peripheral visual fields in CRVO see below - Figures 16,17 and may cause defective vision in the dark. Several treatments may be tried. J Postgrad Meg. 2007 Oct-Dec. 534:270; author reply 270-1. The study authors concluded that high blood pressure and vascular diseases are important risk factors for central retinal vein occlusion, and that blacks have a significantly greater risk for CRVO than other races.

Retinal vascular occlusion