hello..u may get fluroscein angiography though this is a condition of peripheral vessels but central vessels og retina also may get involved,.there is no exact cause known..but immnunological and tuberculosis are the most common cause..but still not certain..if there is leakage then laser/cryotherapy has to be done to seal the vessels..and surgery for vitreous haemorrhage.. avoid any kind of weight lifting and streneous exercises, use a profession in which too much computer work is there.. take some rest kindly consult yr doc for treatment as per yr problem..he is the best judge for the best treatment option for u.. god bless u