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KMID : 0360220090500121789
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Journal of the Korean Ophthalmological Society
2009 Volume.50 No. 12 p.1789 ~ p.1794
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Comparison of Aberrations in Korean Normal Eyes Measured With Two Different Aberrometers
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Yum Jung-Hoon
Choi Suk-Kyue
Kim Jin-Hyoung
Lee Do-Hyung
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Abstract
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Purpose: To compare ocular higher order aberrations measured by two different aberrometers in a sample of normal eyes.
Methods: We included 41 normal eyes of Koreans in this study. Ocular aberration data were obtained through three measurements per eye using Zywave and OPD-Scan devices. Spherical equivalent and higher order aberrations calculated in the central 6 mm zone and expressed as root mean square (RMS) values were analyzed.
Results: A comparison of measurements between the Zywave and OPD-Scan devices demonstrated no statistically significant differences in the RMS values of total higher order aberration (p=0.11), but significant differences were detected in the RMS values of total spherical aberration, total coma and total trefoil (p<0.01).
Conclusions: The two different aberrometers that we tested are suitable for taking repeated measurements and are internally consistent, but not interchangeable.
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KEYWORD
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Aberrometer, Higher order aberration, Normal eye
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