RESUMO
OBJECTIVE: To study the incidence and risk factors predisposing to retinopathy of prematurity (ROP) and to assess the outcome after laser photocoagulation. DESIGN: Prospective cohort observational study. SETTING: Infants admitted to a neonatal intensive care unit of a referral hospital between 2000-2006 and followed up till the age of 3 years. METHODS: Preterm infants with birthweight<1500 g and gestation