I Have A Branch Block In Left Eye Which I

I have a branch block in left eye which I have received 4 avastin injections I have also had premature subscapular cataracts removed from both eyes and treated for uveal effusion. my left eye is like looking through a fish scale and my right eye is very weak I have severe pain in left eye which wakes me frequently lots of floaters and flashes over all my vision is worsening what is causing this I am only 50