title: [Strabismus and binocular vision disorders in premature infants with retinopathy treated with cryotherapy].
abstract: OBJECTIVE
  To assess frequency of refraction errors, abnormal eye position and binocular vision disorders in children with retinopathy treated with cryotherapy.
  
  
  METHODS
  Subjects of the study were 67 children, aged 2-7, treated with cryotherapy for active phase retinopathy.
  
  
  RESULTS
  The largest group consisted of children with good visual acuity (48%). Refraction error was found in 94% of the examined eyes. Hypermetropia was more common (54%) than myopia (40%). Majority of the examined children had squint, and esotropia was much more frequent (52%). The deviation in 37% of children was over 10 degrees. In the group with birth weight under 1000 grams as well as in those with birth weight 1000-1500 grams the squint occurred in 48%, and in children weighing over 1500 grams in 4.0%. Only 54% of the studied children had normal binocular vision.
  
  
  CONCLUSIONS
  Retinopathy of prematurity is a risk factor for development of refraction errors, strabismus and amblyopia. In infants with retinopathy of prematurity treated with cryotherapy it is necessary to have vision check-ups during their early childhood years.
authors.affiliation: Katedry i Kliniki Okulistyki CM UJ w Krakowie.
authors.forename: J
authors.initials: J
authors.lastname: Kobylarz
authors.forename: A
authors.initials: A
authors.lastname: Kubatko-Zielińska
authors.forename: M
authors.initials: M
authors.lastname: Starzycka
mesh_terms: D002648:Child; D002675:Child, Preschool; D017679:Cryotherapy / Q000379:methods*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D012178:Retinopathy of Prematurity / Q000628:therapy*; D013285:Strabismus / Q000628:therapy*; D014786:Vision Disorders / Q000628:therapy*; D015348:Vision, Binocular / Q000502:physiology*
vernacular_title: Wystepowanie zeza i zaburzeń obuocznego widzenia u wcześniaków z retinopatia leczona krioterapia.