The Incidence and Risk Factors for Dry Eye After Pediatric Strabismus Surgery.

Abstract

This study aimed to investigate the incidence and risk factors for dry eye after pediatric strabismus surgery. Children aged 5-12years who underwent strabismus surgery were included in this single-center, prospective, cohort study. The ocular surface assessments were conducted 1day before and 1, 4, and 8weeks after surgery. The main outcome measures were the incidence of dry eye after strabismus surgery and associated risk factors. A total of 84 eyes (48 children) that underwent strabismus surgery were included in the study. The mean age at surgery was 7.21years. The incidence of dry eye was 47.62% at 1week, 10.71% at 4weeks, 0% at 8weeks after surgery. The preoperative tear breakup time (BUT) was lower in the dry eye group than that in the non-dry eye group (P ≤ 0.01). The univariate analysis showed that preoperative BUT was significantly associated with the incidence of dry eye after pediatric strabismus surgery (odds ratio [OR] 0.647, confidence interval [CI] 0.503-0.833, P ≤ 0.01). Dry eye commonly occurs after pediatric strabismus surgery. Tear film instability is more common than deficient aqueous tear production in patients with dry eye after surgery. Children with a low preoperative BUT are more likely to develop dry eye after strabismus surgery.