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KMID : 0360220120530050626
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Journal of the Korean Ophthalmological Society
2012 Volume.53 No. 5 p.626 ~ p.631
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The Relationship among Refractive Power, Axial Length and Choroidal Thickness Measured by SD-OCT in Myopia
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Kim Keun-Ho
Kim Do-Kyun
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Abstract
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Purpose: To measure choroidal thickness in healthy myopic eyes and to evaluate the relationship among choroidal thickness and refractive power and axial length.
Methods: Eighty healthy myopic eyes were evaluated in the present study. The refractive power was measured using an automatic refractor and the axial length using A-scan. The subjects were divided into two groups based on refractive power(≥-6.0 D and <-6.0 D) and axial length (≥25 mm and <25 mm). The choroidal thickness was measured using spectral domain(SD) optical coherence tomography (3-dimensional [3D] OCT-2000, Software Version 6.01; Topcon Corp., Tokyo, Japan), and the statistical relationship between the two groups was analyzed.
Results: A statistically significant difference was found in choroidal thickness according to refractive power and axial length between the two groups (p < 0.001 and p < 0.05, respectively).
Conclusions: Refractive power and axial length had a significant relation to choroidal thickness measured by OCT. When excluding eyes with pathologic myopia, high myopia in healthy eyes may cause choroidal thinning.
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KEYWORD
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Axial length, Choroidal thickness, Optical coherence tomography, Refractive power
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