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자료유형
학술저널
저자정보
저널정보
대한안과학회 Korean Journal of Ophthalmology Korean Journal of Ophthalmology 제26권 제4호
발행연도
2012.1
수록면
255 - 259 (5page)

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Purpose: To study choroidal thickness and its topographic profile in normal eyes using 3D OCT-1000 spectral domain optical coherence tomography and the correlation with age and refractive error. Methods: Fifty-seven eyes (45 individuals) with no visual complaints or ocular disease underwent horizontal and vertical line scanning using 3D OCT-1000. The definition of choroidal thickness was the vertical distance between the posterior edge of the hyper-reflective retinal pigment epithelium and the choroid/sclera junction. Choroidal thickness was measured in the subfoveal area at 500 μm intervals from the fovea to 2,500 μm in the nasal, temporal, superior, and inferior regions. The spherical equivalent refractive error was measured by autorefractometry. Statistical analysis was used to confirm the correlations of choroidal thickness with age and refraction error. Results: The mean age of the 45 participants (57 eyes) was 45.28 years. Detailed visualization of the choroid for measuring its thickness was possible in 63.3% of eyes. The mean subfoveal choroidal thickness was found to be 270.8 μm (standard deviation [SD], ±51 μm), in horizontal scanning and 275.0 μm (SD, ±49 μm) in vertical scanning. The temporal choroidal thickness was greater than any 500 μm interval in corresponding locations, and there was no significant difference between the superior and inferior choroid as far as 2,000 μm from the fovea. Age and refractive error were associated with subfoveal choroidal thickness in terms of regression (p < 0.05). Conclusions: Choroidal thickness in normal Korean eyes can be measured using 3D OCT-1000 with high resolution line scanning. The topographical profile of choroidal thickness varies depending on its location. Age and refractive error are essential factors for interpretation of choroidal thickness.

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