Quantitative analysis of the effect of ocular rotation on postoperative residual astigmatism in small incision lenticule extraction for myopia correction.

ABSTRACT:

Objective

The aim of this study was to conduct a systematic investigation into the effects of ocular rotation on postoperative residual astigmatism in patients undergoing small incision lenticule extraction (SMILE).

Methods

A prospective observational cohort study involved 79 patients (153 eyes) with myopia and astigmatism who underwent SMILE surgery. Ocular rotational magnitude was measured using manual corneal and scleral marking with a slit-lamp microscopy assessment. Preoperative and postoperative (1- and 3-month) assessments included uncorrected distance visual acuity (UDVA), best-corrected visual acuity (BCVA), refractive error, and other relevant ocular parameters.

Results

Residual astigmatism showed significant correlations with ocular rotation magnitude (r =

SUBMITTER: Liu C 

PROVIDER: S-EPMC12713198 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature