title: Clinical features of infants treated for severe retinopathy of prematurity: 8-yearstudy from a large tertiary neonatal intensive care unit in Turkey.
abstract: OBJECTIVE
  The aim of this study was to report the gestational age (GA) and birth weight (BW) distribution of premature babies who needed treatment for retinopathy of prematurity (ROP) and to assess the timing of the treatment.
  
  
  METHODS
  The records of 9008 infants who were screened for ROP were examined and 556 infants who underwent laser therapy for ROP were reviewed. Sex, GA, BW, postnatal age, and postmenstrual (PM) age at the time of laser therapy were recorded. The babies were classified as in-born (Group 1) and out-born infants (Group 2).
  
  
  RESULTS
  The mean GA was 27.3 weeks (range: 22-33 weeks) and the mean BW was 991.1 g (range: 520-2160 g). Of the treated infants, 7.0% were born later than 32 weeks and 8.3% were born over 1500 g. The mean postnatal age was 9.48 weeks (range: 5-22 weeks) and the mean PM age was 36.72 weeks (range: 29-48 weeks) at the time of treatment. Mean BWs and GAs were significantly higher and the mean postnatal age at the time of laser therapy was significantly earlier in Group 2.
  
  
  CONCLUSIONS
  Infants with severe ROP had a wider range of BWs and GAs compared to those from developed countries and earlier treatment was needed for out-born infants.
authors: Department of Ophthalmology, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey.
authors: Zühal
authors: Z
authors: Özen Tunay
authors: Department of Ophthalmology, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey.
authors: Özdemir
authors: Ö
authors: Özdemir
authors: Department of Ophthalmology, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey.
authors: Damla
authors: D
authors: Ergintürk Acar
authors: Department of Ophthalmology, Zübeyde Hanım Women's Health Education and Research Hospital, Ankara, Turkey.
authors: İkbal Seza
authors: İS
authors: Petriçli
authors: Department of Neonatology, Zekai Tahir Burak Women's Health Education and Research Hospital, Ankara, Turkey.
authors: Şerife Suna
authors: ŞS
authors: Oğuz
mesh_terms: D001724:Birth Weight; D005865:Gestational Age; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D007363:Intensive Care Units, Neonatal; D012178:Retinopathy of Prematurity; D012189:Retrospective Studies; D012307:Risk Factors; D014421:Turkey
keywords: Laser photocoagulation; retinopathy of prematurity; screening