Prismatic correction led to successful motor outcomes while maintaining or improving stereo acuity in children with consecutive esotropia and prior unilateral recession and resection surgery, according to a study.
The retrospective cohort study analyzed 105 patients with esodeviation of 5 ∆D or greater at 4 weeks after undergoing unilateral recession and resection surgery by the same surgeon. All patients were fitted with prism glasses with a minimum postoperative follow-up of 2 years. Average patient age was 4.7 years.
Patients were then categorized into two groups. The prism-weaned group comprised 34 patients who were weaned from prismatic correction within 1 year. The prism-wearing group comprised 71 patients who continued prismatic correction beyond 1 year.
Average duration of prism wearing was 20.9 months, and average rate of deviation decline was 2.9 ∆D every 6 months.
There was a significantly higher recurrence rate in the prism-weaned group, whereas the prism-wearing group had a significantly higher rate of overcorrection (P = .003).
The researchers said 71% of patients attained successful motor outcomes and 92% of patients maintained or improved stereo acuity at the final visit.