title: Subretinal hemorrhage after lens-sparing vitrectomy in infants born at or under 24 weeks gestation.
abstract: OBJECTIVE
  To describe short term outcomes in a case series of infants with rapidly progressive retinopathy of prematurity (ROP) requiring laser and lens-sparing vitrectomies (LSV) at early postmenstrual ages (PMAs).
  
  
  METHODS
  Retrospective chart review of infants born at or under 24 0/7 weeks consecutively referred for management of severe ROP between August 2006 and January 2007.
  
  
  RESULTS
  Five female infants (mean gestational age 23 4/7 weeks, mean birthweight 514.4 g) required laser treatment bilaterally for zone 1 or posterior zone II ROP at 35-37 weeks PMA. LSV was performed for progressive stage 4 ROP in eight eyes at 37-39 weeks PMA (mean 38.2 weeks). Subretinal hemorrhage occurred after LSV in five eyes, with three developing subretinal fibrosis preventing complete retinal reattachment.
  
  
  CONCLUSIONS
  Premature infants in this series had rapidly progressive ROP requiring laser and LSV at early PMAs. Subretinal hemorrhage occurred and may be related to the amount of laser necessary to treat large zones of avascular retina, and the early timing of vitrectomy when postoperative contracting preretinal vitreous no longer has the natural tamponading force of formed gel against it. Improved therapies for premature infants of very young gestational ages and large avascular zones are needed.
authors.affiliation: University of North Carolina, Chapel Hill, North Carolina, USA. hartnet@med.unc.edu
authors.forename: M Elizabeth
authors.initials: ME
authors.lastname: Hartnett
authors.forename: R Jeffrey
authors.initials: RJ
authors.lastname: Board
authors.forename: Odette
authors.initials: O
authors.lastname: Houghton
mesh_terms: D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D012163:Retinal Detachment / Q000209:etiology; D012166:Retinal Hemorrhage / Q000209:etiology*; D012178:Retinopathy of Prematurity / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014821:Vitrectomy / Q000009:adverse effects*