###Rationale: Commonest cause of sudden loss of vision in a diabetic is vitreous hemorrhage Slow loss of vision in a diabetic is due to Cystoid macular edema Neovascular glaucoma

###Answer: OPTION C IS CORRECT.
###Question: Cause of sudden loss of vision in a diabetic is due to:
###Options:
A. Neovascular glaucoma
B. Central retinal aery occlusion
C. Vitreous hemorrhage
D. None of the above
