Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 32 4 2003 12 15 64 67 P Mohagheghi N Khosravi H Samaii 2015 10 03 To determine the role of blood transfusion protocols on retinopathy of prematurity (ROP), a prospective cohort study on 57 premature infants under 1501 grams birth weight was performed. Fourteen day-old infants were divided into two groups randomly. Infants in group 1 (n=27) received packed red blood cell transfusion only if specific medical signs were met and their hematocrit level was under 30%. Infants in group 2 (n=30) received blood transfusion to maintain their hematocrit level > 40% regardless of their signs. All infants had an eye examination by indirect ophthalmoscopy from 28 to 40 days of life for detecting ROP. We did not find any significant difference in ROP incidence between both groups. https://ijph.tums.ac.ir/index.php/ijph/article/view/1943 https://ijph.tums.ac.ir/index.php/ijph/article/download/1943/1924