안검열 비대칭에 관한 연구

Prevalence of Palpebral Fissure Asymmetry in Healthy Koreans

조사대상 61명의 primary gaze, $45^{\circ}$ right gaze 및 $45^{\circ}$ left gaze때의 안검열폭을 측정하였다. 안검열폭의 비대칭 판정기준을 1mm 이상으로 하였을 때 생리적 안검열폭 비대칭의 prevalence는 primary gaze에 서 13.1%(8/61), right gaze에서 24.6%(15/61) 그리고 left gaze에서 16.4%(10/61) 이었다. Primary gaze에서 안검열폭의 비대칭 값을 보정한 후 two-tailed trivariate analysis를 실시한 결과 horizontal gaze에서 대부분의 경우 보정된 안검열폭 비대칭 값은 1mm 이하였고 내전안의 폭이 더 넓어지는 경향을 보였다. 동시에 이러한 효과는 right gaze와 left gaze때에 동일하게 나타났고 성에 따라 유의성 있는 차이가 없었다. 내전 안에서 안검열폭의 평균 증가는 right gaze 때에 0.29mm이고 left gaze 때에 0.21mm이었다.

The palpebral fissure height of 67 healthy koreans were examined. Measurements were obtained with high resolution digital image processing, with the eyes in primary gaze, in 45-degree right gaze, and in 45-degree left gaze. When a criterion of equal to or greater than 1mm was used, the prevalence of physiologic palpebral fissure asymmetry was 13.1 (8/61) in primary gaze, 24.6%(15/61) in right gaze, and 16.4%(10/61) in left gaze. The largest observed palpebral fissure asymmetry was 1.795mm. After correcting for any existing fissure asymmetry in primary gaze, two-tailed trivariate analysis of variance showed that most corrected palpebral fissure asymmetries are less than 1mm and adducting eye tended to be wider in horizontal gaze. Also this effect of wider fissure in the adducting eye was the same for right gaze or left gaze, and found no significant effect of gender on palpebral fissure asymmetry. The mean increase in the palpebral fissure of the adducting eye was 0.29mm for right gaze and 0.21mm for left gaze.