Factors Associated with Retinopathy of Prematurity Based on Laboratory Findings at Dr. Soetomo Hospital, Indonesia Aqila Sabila Rusyda1, Reni Prastyani2*, Kartika Darma Handayani3, Rozalina Loebis2 Abstract Background: Retinopathy of Prematurity (ROP) is a leading cause of preventable blindness among preterm infants, with a relatively high prevalence in Indonesia. Although various