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Infantile exotropia

A W Biglan1, J S Davis, K P Cheng

  • 1Department of Ophthalmology, Children's Hospital of Pittsburgh, PA, USA.

Journal of Pediatric Ophthalmology and Strabismus
|March 1, 1996
PubMed
Summary
This summary is machine-generated.

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Infantile exotropia is a rare condition in healthy infants. While often requiring surgery, patients can achieve good visual acuity and some develop stable binocular function.

Area of Science:

  • Ophthalmology
  • Pediatric Ophthalmology
  • Strabismus Research

Background:

  • Infantile exotropia is an uncommon condition in healthy children aged 6 months to 1 year.
  • This study focuses on healthy infants diagnosed with exotropia within their first year of life.

Purpose of the Study:

  • To investigate the characteristics and outcomes of healthy infants diagnosed with infantile exotropia.
  • To evaluate the long-term visual acuity, ocular alignment, and binocular function in this patient group.

Main Methods:

  • Retrospective chart review of patients diagnosed with infantile exotropia between 1980 and 1994.
  • Inclusion criteria: exodeviation in the first year of life, healthy status, and follow-up of at least 4 years.
  • Exclusion criteria: neurologic defects, prematurity, craniofacial syndromes, or significant ocular/visual impairments.

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Main Results:

  • Twelve healthy patients met the criteria, with a mean follow-up of 7.9 years.
  • Ten patients (83%) required surgical correction, with some needing additional procedures for oblique muscle overaction and dissociated vertical deviation (DVD).
  • All patients achieved equal visual acuity and satisfactory ocular alignment; five had distance and near fusion, two had good stereo acuity.

Conclusions:

  • Infantile exotropia, though rare, can lead to good visual acuity but unstable alignment, similar to infantile esotropia.
  • Surgical intervention is frequently necessary, yet some patients develop significant binocular function.
  • Oblique muscle overaction and DVD are common comorbidities in infantile exotropia.