Intervention 1: The case group will receive a 30mg zinc gloconate tablet for 3 months, one to two hours after lunch. The tablets will provided by jalinous pharmaceutical company in Tehran . All the p
Sponsors
Vice chancellor for Research, Tabriz University of Medical Sciences
Conditions
Diabetic retinopathy.
Diabetic retinopathyDiabetic retinopathy.
Non-insulin-dependent diabetes mellitus