title: Mirror image congenital esotropia and concordant hypermetropia in identical twins.
abstract: OBJECTIVE
  To report the occurrence of mirror image congenital esotropia and concordant hypermetropia in a pair of monozygotic twins.
  
  
  METHODS
  A pair of twins was recruited through the Australian Twin Registry. Zygosity was determined by questionnaire, physical appearance, and standard genotyping. Visual acuity was measured using the logMAR chart at 3 m followed by cycloplegic refraction using the Topcon autorefractor.
  
  
  RESULTS
  Twin 1 developed right eye esotropia at 2 years of age with bilateral hypermetropia (right = +5.75 D, left = +5.75 D). Twin 2 developed left eye esotropia at age 2 years with bilateral hypermetropia (right = +6.75, left = +7.50).
  
  
  CONCLUSIONS
  We describe the first reported case of mirror image congenital esotropia with concordant hypermetropia in monozygotic twins.
authors.affiliation: Centre for Eye Research Australia University of Melbourne, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Dirani
authors.forename: Maria
authors.initials: M
authors.lastname: Schache
authors.forename: Paul N
authors.initials: PN
authors.lastname: Baird
mesh_terms: D000328:Adult; D004200:Diseases in Twins / Q000235:genetics*; D004948:Esotropia / Q000151:congenital*; D005260:Female; D005838:Genotype; D006801:Humans; D006956:Hyperopia / Q000235:genetics*; D012042:Registries; D011795:Surveys and Questionnaires; D014430:Twins, Monozygotic / Q000235:genetics*; D014792:Visual Acuity