Journal of The Korean Ophthalmological Society (대한안과학회지)

The Korean Ophthalmological Society (대한안과학회)
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Normal Contrast Sensitivity for Various Ages

연령에 따른 정상 대비감도

You, Young-Cheol;Choi, Tae-Hoon;Lee, Ha-Bum
유영철;최태훈;이하범

  • Published : 20030100
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Abstract

Purpose: To estimate the mean contrast sensitivity of normal Korean people and determine the difference between various ages. Methods : One hundred sixty eight eyes with normal vision and no ocular disease were divided into three groups: the first group was ages between 10 and 19 years (n=32), the second group between 20 and 59 years (n=IIO), and the third group older than 60 years (n=26). We tested the contrast sensitivity with multivision contrast tester 8000 (Vistech Consultants, Inc., USA) which uses sine wave grating patches of 5 different spatial frequencies under standardized luminance at two different conditions of day and night Results: Mean contrast sensitivities of total eyes at spatial frequencies of 1.5, 3, 6, and 18 cycles per degree were 40, 84, 92, 56, and 20 at day condition and 37, 70, 56, 21, and 5 at night condition, respectively. Mean contrast sensitivity of the first group was higher than that of others at all 5 spatial frequencies and there was no statistical significance between the second group and the third group (p<0.05). Conclusions: Mean contrast sensitivity of normal eyes included in this study was within the normal value of other previous study. There was statistically significant decrease of contrast sensitivity value in older age group.

목적 : 우리나라 정상인의 대비감도의 평균치와 연령에 따른 차이가 있는지 알아 보고자 하였다. 대상과 방법 : 안과 질환이 없고 정상 시력을 가진 사람을 연령별로 1군(10세${\sim}$19세, 32안), 2군(20세${\sim}$59세, 110안), 그리고 3군(60세 이상, 26안)으로 나누어 1.5, 3, 6, 12, 18 cycles per degree (cpd)의 5가지 공간주파수의 격자무늬를 이용하여 표준화된 조명 하에 대비감도를 측정할 수 있는 Multivision Contrast Tester 8000 (Vistech Consultants, Inc., USA)으로 낮과 밤의 두 가지 조건 하에서 대비감도를 측정하였다. 결과 : 전체 대비감도는 낮 조건 시 1.5, 3, 6, 12, 18 cpd에서 40, 84, 92, 56, 20이었고 밤 조건 시 37, 70, 56, 21, 5였으며 1군에서 가장 높은 대비감도를 보였고 2군과 3군 사이에는 통계적으로 유의한 차이는 없었다(p<0.05). 결론 : 안과 질환이 없고 정상시력을 갖는 본 연구의 대상안에서 대비감도는 다른 연구에서 제시한 정상범위 내에 있었고 고연령층에서 20세 미만의 저연령층에 비해 대비감도가 저하되는 소견을 보였다.

Keywords

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