“…CRVO has been reported in patients receiving chronic, therapeutic levels of warfarin, implying that this medication may be ineffective as prophylaxis. 29,30 Similarly, other vascular agents, including streptokinase, 31 ticlopidine, 32 tissue plasminogen activator, 33 and pentoxifylline, have been studied, 22,23 but they have shown a limited or no benefit. Panretinal photocoagulation has been reported to yield regression of neovascularization in > 90% of cases and to reduce the risk of neovascular glaucoma to 1%.…”