diabetes related retinopathy

retinopathy diabetic vector retina eye vision damage blood vessels treatment disease laser blindness edema screening hemorrhage macular arteries nonproliferative proliferative diabetes aneurysms leakage ischemia oxygen neovascularization surgery fluid hypoxia vitreous detachment loss optic nerve capillary fundus monitoring angiography neuropathy tissue eyeball cornea human diagram medical abnormal medication membrane ocular ophthalmology