Characterization of postoperative LASIK ectasia features on higher-order aberration excimer ablation maps.

ABSTRACT:

Background

To characterize anterior corneal higher-order aberration (HOA) excimer ablation map patterns in postoperative LASIK ectasia (POE) and to examine correlations between newly identified corneal HOA ablation map features of POE and known topographic indices.

Methods

Prospective multicenter non-interventional descriptive study. A total of 28 eyes from 22 POE patients were enrolled. The postoperative HOA ablation map was derived from Topolyzer Vario corneal imaging at the time of POE diagnosis. Features that recurred were identified and then analyzed. Correlations to Orbscan indices were studied.

Results

An arrangement of two elliptical paracentral ablation islands, deep inferior and shallow superior, in direct mirror-like opposition to each other, were identifie

SUBMITTER: Wallerstein A 

PROVIDER: S-EPMC10734092 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature