Abstract

To assess the effects of prism adaptation on the surgical outcomes of individuals with partially accommodative esotropia (PAET). The medical records of 51 patients with PAET who were managed surgically at single referral center were retrospectively reviewed. Patients were divided into two groups according to prism adaptation. Data about sex, age, initial angle of deviation, final angle of deviation, stereoacuity, surgical dosage, and follow-up periods were collected. The main outcome of this study was motor outcomes at 12months. Eighteen patients had a history of prism adaptation (PA group) and 33 did not (augmented surgery group, AS group). One year after surgery, 12 (66.7%) patients in the PA group and 21 (63.6%) in the AS group achieved an angle of deviation less than 5 PD. The surgical success rate in both groups did not significantly differ (p = 1). After the first prism adaptation test, six patients had an angle of deviation similar to the previous angle; however, 12 patients had larger angle, and consequently required additional prism (prism builder). Two (33.3%) patients who were prism non-builders had deviation less than 5 PD during the final visit. However, among the prism builders, four (57.1%) and five (100%) patients who had prism added once and more than once, respectively, had less than 5 PD deviation during the final visit (p = 0.03). No significant differences were observed in terms of surgical outcomes between both groups. Nonetheless, in PA group, prism builders have better surgical outcomes than non-builders.

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