Association Between Head Tilt and Asymmetric Epiblepharon.

Abstract

Epiblepharon is known to be bilateral and symmetric. However, asymmetric epiblepharon is frequently observed in patients with head tilt and, to date, this condition has not been investigated. To evaluate the clinical features of epiblepharon in patients with head tilt and to analyze the association between the direction of head tilt and epiblepharon asymmetry. The medical records of 1074 Korean children who received a diagnosis of epiblepharon between January 1, 2006, and October 31, 2013, at Seoul National University Bundang Hospital were retrospectively reviewed. The data collected included sex, age, extent and asymmetric presentation of epiblepharon, and direction and cause of head tilt. The presence of epiblepharon asymmetry in patients with head tilt as well as the association between the direction of head tilt and the side having more severe epiblepharon. Of 1074 patients (536 boys; mean [SD] age, 5.4 [2.6] years) with epiblepharon, 38 individuals (3.5%) showed head tilt. The causes of head tilt were superior oblique palsy (18 patients [47.4%]), congenital muscular torticollis (10 [26.3%]), dissociated vertical deviation (3 [7.9%]), and unknown (7 [18.4%]). Asymmetric epiblepharon was more common in children with vs without head tilt (34 [89.5%] vs 80 [7.7%]; P < .001, Fisher exact test). Of the 34 patients with head tilt and asymmetric epiblepharon, the direction of head tilt was consistent with the side having more severe epiblepharon in 29 individuals (85.3%) and inconsistent in 5 individuals (14.7%) (P = .009). These data suggest that, in patients with epiblepharon and head tilt, epiblepharon is most often asymmetric and is severe in the head-tilted side. These results suggest that patients with asymmetric epiblepharon should be evaluated for head tilt.