Snap Shot A 3 lb 6 oz neonate who received 40 days of supplemental oxygen is evaluated for retinopathy of prematurity (ROP). Examination of the infants eyes shows a thickened, demarcated line and formation of an intraretinal ridge bilaterally. Introduction ROP is a vasoproliferative retinopathy seen primarily in premature infants exposed to high oxygen concentrations for a prolonged period of time Presentation Physical exam thickened, demarcated line of an intraretinal ridge bilaterally