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Common forms of childhood strabismus in an incidence cohort
1Department of Ophthalmology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA. mohney@mayo.edu
Purpose:
To report the prevalent forms of childhood strabismus.
Design:
Retrospective, population-based cohort study.
Methods:
The medical records of all Olmsted County, Minnesota, residents younger than 19 years diagnosed with esotropia, exotropia, or hypertropia from January 1, 1985 through December 31, 1994, were reviewed.
Results:
Six hundred twenty-seven new cases of childhood strabismus were identified during the 10-year study period, including 380 (60.1%) with esotropia, 205 (32.7%) with exotropia, and 42 (6.7%) with hypertropia. The five most common forms of strabismus included accommodative esotropia (27.9%), intermittent exotropia (16.9%), acquired nonaccommodative esotropia (10.2%), esotropia in children with an abnormal central nervous system (7.0%), and convergence insufficiency (6.4%).
Conclusions:
This study provides population-based data on the most prevalent forms of childhood strabismus. Accommodative esotropia, intermittent exotropia, and acquired nonaccommodative esotropia were the predominant forms of strabismus in this Western population.
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