Risk factors for severe retinopathy of prematurity in premature infants: a single-center study.

Objective: To evaluate the incidence and risk factors for severe retinopathy of prematurity (ROP) in preterm infants.

Methods: Between May, 2008 and May, 2011, a total of 957 preterm infants at 4-6 weeks of chronological age or 32 weeks of postmenstrual age underwent retinal evaluation by RetCamII in our center, and the data of infants with ROP in any stage were analyzed.

Results: Among the 957 preterm infants, we found 86 (8.