Change in Lower Eyelid Contour Following Ectropion Repair With Lateral Tarsal Strip.

PURPOSE

To evaluate the change in lateral canthal angle (LCA), inferior ocular surface exposed (IOSE), lower eyelid curvature, and margin-to-reflex distance 2 in those undergoing lower eyelid ectropion repair using a lateral tarsal strip technique.

METHODS

This is an Institutional Review Board-approved retrospective analysis of patients undergoing lower eyelid ectropion repair. This study included all patients from 2012 to 2018 operated on by a single surgeon at the University of Texas Southwestern Medical Center. For each patient, LCA, IOSE, and eyelid curvature were measured on preoperative and postoperative photographs using NIH Image J photographic analysis. These measurements were compared using paired 1-tail t-tests for LCA and IOSE and paired 2-tail t-tests for eyelid curvature. This study was Health Insurance Portability and Accountability Act-compliant with protection of individually identifiable information.

RESULTS

Fifty-one patients with lower eyelid ectropion underwent lower eyelid ectropion repair using a lateral tarsal strip technique. Forty-three of the patients underwent a bilateral lower eyelid ectropion repair. There was no statistically significant difference in the LCA. There was a reduction in IOSE among both cohorts. The fourth degree polynomial trendlines generated to assess eyelid curvature demonstrated statistical significance, suggesting a flattening of eyelid curvature. margin-to-reflex distance 2 also had a statistically significant decrease postoperatively.

CONCLUSIONS

Lower eyelid ectropion repair using a lateral tarsal strip approach causes a reduction in IOSE, a more gradual lower eyelid curvature, and a decrease in margin-to-reflex distance 2 without causing a statistically significant change in LCA.