Relationship between Optic Disc Parameters and Myopic Refractive Errors in Myopia.

Park, Hyun Joon; Choi, Jun Ho; Choi, Kee Yong; Hong, Chul

Original Article

Journal of the Korean Ophthalmological Society 1999;40(4):1084-1089.
Published online April 1, 1999.

Relationship between Optic Disc Parameters and Myopic Refractive Errors in Myopia.

Hyun Joon Park, Jun Ho Choi, Kee Yong Choi, Chul Hong

Department of Ophthalmology, Gil Medical Center, Gachon Medical Center.

근시 안에서 시신경유두 변수들의 굴절이상과의 연관성 및 변이도

박현준(Hyun Joon Park),최준호(Jun Ho Choi),최기용(Kee Yong Choi),홍철(Chul Hong)

Abstract

Myopic discs(range: -0.5D) which were taken a confocal scanning laser ophthalmoscope(HRT, Heidelberg Engineering) were analyzed to determine the relationship between optic disc parameters and myopic refractive errors. Regression analysis and coefficient variation were used for a statistic tool. The disc area was not correlated with the myopic refractive error(p=0.21) and showed 16.0% of coefficient of variation. Cup area, cup disc area ratio, rim area, cup volume, rim volume, mean cup depth, maximum cup depth and cup shape measure showed statistically significant correlation with myopic refractive error, respectively(p<0.05). Among these parameters, rim area varied least(within all myopic eyes) with 16.5% of coefficient of variation. As the rim area is the most stable optic disc parameter interindividually in myopic population, it seem to be valuable for follow-up evaluation when a glaucomatous damage is suspected in myopic eyes by calculating its expected normal value with a regression equation.

Key Words: Myopic discs;Confocal scanning laser ophthalmoscope;Myopic refractive error;Rim area