3 days ago , my father was diagnosed with having had bleeding on his right retina as a result of high intraocular pressure about 3 weeks ago. the docs. prescribed him a shot of Avastin in his eye and he had it administered 2 days ago. We are desparately interested to know how does this medication treat his condition and could possibly restore his vision, what is the prognosis?! will this medication help eliminate the blockage of blood vessels on his retina? thank you so much. experts only please.