INS and diabetes mellitus: The prevalence of DR was 54.6%. DR was mild non-proliferative (NP) in 52.6% of patients, severe NP in 15.3%, and proliferative in 4.4%. Predictors for DR were having diabetes for 11 to 16 years, not taking daily medications on time, not going for fundus examination annually and uncontrolled diabetes. In addition, patients not administering insulin had a lower probability by 70% to suffer DR. An increase of one unit in BMI increased the probability of developing DR by 11%.