50% of cases after about 25 years of the onset of diseaseThe hallmark Q of PDR is the occurence of neovasculari- ation'i over the changes of very severe NPDRVitreous detachment & vitreous haemorrhage may occurDiabetic MaculopathyMacular edemaQ is termed as clinically significant macular edemaChanges in macula affect visionD.Maculopathy-4 subtypeFocal exudative maculopathyDiffuse exudative maculopathyIschaemic maculopathyMixed maculopathyAdvanced Diabetic Eye DiseasePersistent vitreous haemorrhageTractiona! retinal detach m entQNeovascularglaucoma Q">