The predictive accuracy of Barrett toric calculator using measured posterior corneal astigmatism derived from swept source-OCT and Scheimpflug camera.

ABSTRACT:

Purpose

To compare the performance of Barrett toric calculator incorporated with measured posterior corneal astigmatism (PCA) derived from IOL Master 700 and Pentacam HR versus predicted PCA.

Methods

The predicted residual astigmatism using Barrett toric IOL calculator with predicted PCA, measured PCA from IOL Master 700 and measured PCA from Pentacam were calculated with the preoperative keratometry and intended IOL axis with modification. The vector analysis was performed to calculate the mean absolute prediction error (MAE), the centroid of the prediction error and the percentage of eyes with a prediction error within ±0.50 D, ±0.75 D, and ±1.00 D.

Results

In 57 eyes of 57 patients with mean age of 70.42 ± 10.75 years, the MAE among the three calculation methods we

SUBMITTER: Yang X 

PROVIDER: S-EPMC10764741 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature