Comparison of image-based quantification methods in evaluating fixation stability using a remote eye tracker in abnormal phoria.

ABSTRACT:

Objective

This study was performed to establish a quantitative evaluation and comparison of fixation stability, as measured by an eye tracker, using image-based areas determined by the bivariate contour ellipse area (BCEA), kernel density estimation (KDE), and Scanpath methods.

Methods

This prospective cross-sectional study included 45 and 20 participants with abnormal and normal phoria, respectively. Eye movements were recorded using a remote eye tracker and were plotted using RStudio software. Image-based areas were evaluated using ImageJ software.

Results

The image-based areas used to evaluate fixation stability exhibited decreasing stability in the abnormal phoria group in the following order: KDE with ±1 standard deviation (SD), BCEA with ±1 SD, KDE with ±2 SD or

SUBMITTER: Kim SY 

PROVIDER: S-EPMC9112722 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature