Journal of American Association for Pediatric Ophthalmology and Strabismus
Major ArticlesWhy does early surgical alignment improve stereoacuity outcomes in infantile esotropia?☆,☆☆
Section snippets
Subjects
Participants were 129 consecutive patients enrolled in a prospective study of infantile esotropia at the time of diagnosis and were followed up for a minimum of 5 years. All patients had constant esodeviations of ≥40 PD on the initial visit, usually measured at near with prism and cover testing. Some of the youngest infants were measured with the modified Krimsky method. All were remeasured on at least 1 occasion before surgery and either maintained the same angle of deviation (within 5 PD) or
Results
Overall, 36.4% of patients demonstrated some stereopsis, 21.7% passed the Randot stereotest at 500" or better, and an additional 14.7% passed the Titmus fly stereotest (3000"). A summary of the prevalence of stereopsis as a function of each of the independent variables is shown in Figure 1.
Discussion
Although both age at alignment and duration of misalignment are correlated with long-term stereoacuity outcome, the results suggest that early surgical alignment of patients with infantile esotropia is associated with better random dot stereoacuity outcomes primarily because early surgery minimizes the duration of misalignment. Random dot stereopsis can be achieved in patients with later surgery provided that the duration of misalignment is not prolonged. “Later surgery” does not refer to
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Cited by (0)
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Supported in part by NIH grant EY05236.
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Reprint requests: Eileen E. Birch, PhD, Retina Foundation of the Southwest, 9900 N Central Expressway, Suite 400, Dallas, TX 75231 (e-mail: [email protected]).