The Relationship among Refractive Power, Axial Length and Choroidal Thickness Measured by SD-OCT in Myopia.

Kim, Keun Ho; Kim, Do Gyun

doi:2012.53.5.626

J Korean Ophthalmol Soc > Volume 53(5); 2012 > Article

Original Article

Journal of the Korean Ophthalmological Society 2012;53(5):626-631.
DOI: https://doi.org/10.3341/jkos.2012.53.5.626 Published online May 15, 2012.

The Relationship among Refractive Power, Axial Length and Choroidal Thickness Measured by SD-OCT in Myopia.

Keun Ho Kim, Do Gyun Kim

Department of Ophthalmology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea. kimdk89@empas.com

근시안에서 스펙트럼 영역 빛간섭단층촬영으로 측정한 맥락막 두께와 굴절력 및 안축장과의 관계

김근호⋅김도균

Department of Ophthalmology, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea

Abstract

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 (> or =-6.0 D and <-6.0 D) and axial length (> or =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.

Key Words: Axial length;Choroidal thickness;Optical coherence tomography;Refractive power