<prompt> Most common cause of rubeosis iridis -TumorCRAORadiation retinopathyDiabetic retinopathy  <response>: Rubeosis iridis -neovascularisation of iris.it develops following retinal ischemia which is a common feature of: proliferative diabetic retinopathy central retinal vein occlusion sickle cell retinopathy Eales disease Ref:Comprehensive ophthalmology-AK Khurana 6th edition chapter-10 page no:250 