|
KMID : 1191420060050010023
|
|
Korean Journal of Optometry and Vision Science
2006 Volume.5 No. 1 p.23 ~ p.28
|
|
|
Comparison of Refractive Error using Autorefractor and Aberrometer in Myopia
|
|
Kim Min-Jung
Joo Choun-Ki
|
|
|
Abstract
|
|
|
Purpose: To compare the Canon RK?5 (Cannon, Tokyo, Japan) and VISX WaveScanⓡ system (Wavescan, VISX, Sunnyvale, CA, USA) for measuring refractive error in myopia.
Methods: There are no catatact, corneal opacity, and medium opacity visit to our haspital in simple myopia 256 eyes of 130 patients, we divided myopia of more than spherical equvalent 6.0 D high myopia group1 and less than spherical equvalent 6.0 D myopia group 2. Cycloplegic refractions were performed in myopia eyes using both the Canon RK?5 and VISX WaveScanⓡ system. Refractive data were analyzed using power vectors. Mean differences and 95% limits of agreement were determined for refractive components between the two instruments.
Results: Mean paired differences for M component (spherical equivalent) and J0 component between the Canon RK?5 and VISX WaveScanⓡ system were ＜0.30 D, ＜0.10 D in high myopia group and myopia group there were statistically significant difference (p=0.000). J45 were no statistically significant difference in in high myopia group and myopia group (p=0.750, 0.089).
Conclusions: The VISX WaveScanⓡ system was an easy to use for the measurement of refractive error in myopia. VISX WaveScanⓡ system showed devaluation than Canon RK?5 for measuring refractive error in myopia. We need to exclude small axis change and refractive error by misalignment during measurement.
|
|
|
KEYWORD
|
|
|
Aberrometer, Automated refraction, Power vector analysis, Refractive error
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|