| The Effect of Myopic Refractive Error on the Evaluation of Optic Nerve Head Parameters using Topog raphic Scanning System. |
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Hae Jin Hong, Kyu Ryong Choi |
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Department of Ophthalmology, Medical Research Center, College of Medicine, Ewha Womans University, Mokdong Hospital, Seoul, Korea. CKrey02@.ewha.mm.ac.kr |
| 근시성 굴절이상이 Topog raphic Scanning System을 이용한 시신경 유두부 분석에 미치는 영향 |
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최규룡(Kyu Ryong Choi),홍해진(Hae Jin Hong) |
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| Abstract |
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This study was performed to determine the effect of myopic refractive error on optic nerve head parameters using Topographic Scanning System (TopSSTM). One hundred thirty two myopic eyes of 120 subjects with normal visual fields were enrolled in this study.Their visual acuities were better than 0.8 with their corrections.Subjects were divided into four myopic groups.Mean refractive error was -3.8 diopter (range:+1.25D ~-1 2.2 5 D ). Total contour area, effective area, volume above, neuro-retinal rim area, and contour variation showed statistically significant correlations with myopic refractive error.The disc area (total contour area)was correlated with the myopic refractive error.However, effective area, volume above, and neuro-retinal rim area showed statisticall correlation with total contour area rather than myopic refractive error.Contour variation was correlated with myopic refractive error.With increased disc contour tilt, nasal and superior neuroretinal rim area also statistically increased. In conclusion, effect of disc area and contour variation should be considered in the evaluation of optic nerve head parameters of myopic patients. However, further evaluation of myopic patients with glaucoma is required through comparison study with control group. |
| Key Words:
Myopic disc;Myopic refractive error;Topographic Scanning System |
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