title: Retinopathy of prematurity in discordant twins.
abstract: Discordant twins may be at increased risk for retinopathy of prematurity (ROP) because of factors related to their unequal growth. Discordancy is defined as a difference of 15% or more in the birth weights of the two infants. We examined the data in 26 sets of discordant twins from six NICUs, including birthweight, gestational age, sex, and highest grade of ROP. Thirty-eight percent (10) of the lower birthweight infants had higher grades of ROP than their twin. Twenty-three percent (6) of the heavier birthweight twins had higher grades of ROP than their smaller siblings. Three infants reached threshold, and five were prethreshold. In every case, their twin siblings had mild or no ROP. Thirty-eight percent of the twins (10) had the same ROP outcome.
authors.affiliation: Department of Ophthalmology, Children's Hospital, Columbus, Ohio 43205-2696, USA.
authors.forename: R R
authors.initials: RR
authors.lastname: Fellows
authors.forename: M L
authors.initials: ML
authors.lastname: McGregor
authors.forename: D L
authors.initials: DL
authors.lastname: Bremer
authors.forename: G L
authors.initials: GL
authors.lastname: Rogers
authors.forename: D
authors.initials: D
authors.lastname: Miller
mesh_terms: D001724:Birth Weight; D004200:Diseases in Twins; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D008297:Male; D012178:Retinopathy of Prematurity / Q000145:classification / Q000209:etiology*; D012189:Retrospective Studies; D012307:Risk Factors