J Korean Ophthalmol Soc > Volume 55(12); 2014 > Article
Journal of the Korean Ophthalmological Society 2014;55(12):1758-1764.
DOI: https://doi.org/10.3341/jkos.2014.55.12.1758    Published online December 15, 2014.
Comparison of Keratometry and Corneal Higher Order Aberrations between Scout Videokeratoscope and Pentacam Scheimpflug Camera.
Ji Young Shin, Min Young Lee, So Hyang Chung
1Department of Ophthalmology and Visual Science, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea. chungsh@catholic.ac.kr
2ISU Eye Clinic, Seoul, Korea.
두 가지 장비를 이용한 각막곡률 및 각막고위수차의 비교
신지영1⋅이민영2⋅정소향1
Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, The Catholic University of Korea College of Medicine¹, Seoul, Korea
ISU Eye Clinic², Seoul, Korea
Abstract
PURPOSE
To investigate the correlations of keratometry and corneal high order aberrations (HOAs) between the Keratron Scout videokeratoscope and the Pentacam HR Scheimpflug camera. METHODS: From December 2012 to February 2013, keratometry and corneal HOAs were determined using the Keratron Scout videokeratoscope and Pentacam HR Scheimpflug camera in 23 healthy individuals (46 eyes). RESULTS: Average keratometry showed high correlation with 95% confidence interval -0.155 +/- 0.37 between the Keratron Scout and Pentacam HR. When comparing HOAs of the Keratron Scout and total corneal HOAs of Pentacam HR, total root-mean-square (RMS), and spherical aberration were positively correlated between the 2 devices (r = 0.67, p < 0.001 and r = 0.74, p < 0.001, respectively). When comparing HOAs of Keratron Scout and anterior corneal HOAs of Pentacam HR, total RMS, spherical aberration and coma were positively correlated between the 2 devices (r = 0.62, p < 0.001, r = 0.81, p < 0.001, and r = 0.52, p = 0.047, respectively). CONCLUSIONS: Although the 2 devices are based upon different principles, the Keratron Scout videokeratoscope and Pentacam HR Scheimpflug camera showed positive correlations in keratometry, total RMS, spherical aberration, and coma. Both devices may be useful for clinical applications.
Key Words: Higher order aberrations;Keratometry;Keratron Scout videokeratoscope;Pentacam HR Scheimpflug camera;Spherical aberration


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