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Comparison of keratometry and corneal higher order aberrations between Scout videokeratoscopy and Pentacam Scheimpflug camera

Poster Details

First Author: S.Chung SOUTH KOREA

Co Author(s):    Y. Yoo                    

Abstract Details

Purpose:

To investigate the correlations of keratometry and corneal high order aberrations (HOAs) between Keratron Scout videokeratoscopy and Pentacam HR Scheimpflug Camera.

Setting:

Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.

Methods:

In healthy eyes, keratometry and corneal high order aberrations (HOAs) were determined using the Keratron Scout videokeratoscopy (Optikon, Rome, Italy) and Pentacam HR Scheimpflug Camera (Oculus, Wetzlar, Germany).

Results:

Average keratometry showed high correlation with 95% confidence interval -0.155±0.37 between the Keratron Scout and Pentacam HR. For comparison of HOAs of Keratron Scout and total corneal HOAs of Pentacam HR, there were positive correlations in total RMS (root-mean-square) and spherical aberrations between two devices (r=0.67, P<0.001 and r=0.74, P<0.001, respectively). For comparison of HOAs of Keratron Scout and anterior corneal HOAs of Pentacam HR, there were positive correlations in total RMS, spherical aberrations, and coma between two devices (r=0.62, P<0.001, r=0.81, P<0.001, and r=0.52, P=0.047, respectively).

Conclusions:

Although two devices are based upon different principle, Keratron Scout videokeratoscopy and Pentacam HR Scheimpflug Camera showed positive correlations in keratometry, total RMS, spherical aberration, and coma.

Financial Disclosure:

NONE

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