Ophthalmology Objective of ETDRS study is A Effect of aspirin on the course of diabetic retinopathy B To observe patients with severe DR in type 1 and type 2 diabetes over 2 years to determine visual outcomes C To evaluate whether photocagulation prevents severe visual loss in eyes with diabetic retinopathy D ALL of the above π‘ Explanation Objective of ETDRS study is β Correct Answer: A. Effect of aspirin on the course of diabetic retinopathy