J Korean Ophthalmol Soc > Volume 58(1); 2017 > Article
Journal of the Korean Ophthalmological Society 2017;58(1):21-26.
DOI: https://doi.org/10.3341/jkos.2017.58.1.21    Published online January 15, 2017.
Comparison of Refractive Power and Astigmatism between Digital Keratometer and Autorefractor.
Jae Won Choi, Sang Youp Han, Kyung Heon Lee
Sungmo Eye Hospital, Busan, Korea. medicalhan@daum.net
계수형 각막곡률계와 자동굴절검사기의 굴절력과 난시의 비교
최재원⋅한상엽⋅이경헌
성모안과병원
Abstract
PURPOSE
To compare the corneal refraction, astigmatism, and corneal marking for toric intraocular lens measured with a VERION® Image Guided System and an autorefractor in order to precisely determine the toric intraocular lens target. METHODS: The medical records of 29 eyes of 29 patients were retrospectively reviewed to compare the corneal refraction, axis, and amount of astigmatism measured with a VERION® Image Guided System and an autorefractor. We compared the difference in marked axis for toric intraocular lenses as measured by a VERION Digital Marker and a manual marker. RESULTS: The average corneal refraction and amount of astigmatism were greater with the VERION® Image Guided System than with the autorefractor. The average difference in axis of astigmatism was 9.62°. The difference in axis of astigmatism in patients with more than 1.0 D of astigmatism (18 eyes) was 2.82 ± 2.27°, while that in patients with less than 1.0 D of astigmatism (11 eyes) was 20.27 ± 28.14°. The average difference in marked axis for toric intraocular lens measured by the VERION® Digital Marker and manual marker was 2.50° (0°-9.27°). CONCLUSIONS: The corneal refraction and amount of astigmatism were significantly higher with the VERION® Image Guided System, so careful concern and comparison of surgical outcomes between the two devices is needed in biometry.
Key Words: Astigmatism;Autorefractor;Corneal refraction;Digital marker;VERION®


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