정상인에서 수면시간대 체위변동에 따른 안압 변화
Change in Intraocular Pressure According to Sleeping Posture in Normal People
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목적: 수면시간대(22-24시) 좌위, 와위, 복와위 및 측와위로의 체위 변동이 정상인에서 안압 변화에 미치는 영향에 대하여 알아보고자한다. 대상과 방법: 건강한 성인남자 70명 140안을 대상으로 안과검사를 시행하고 수면시간대 체위변동에 따른 안압의 변화를 측정하였다. 체위변동 전 긴장을 풀고 앉은 상태에서 기준 안압을 측정하였으며, 와위, 복와위, 측와위에서 상호간의 안압 영향을 줄이기 위해 체위변동 전 좌위를 10분간 유지한 후 각 자세를 취하고 0분과 10분 후의 안압을 각각 2회씩 측정하여 평균하였다. 결과: 자세를 취하고 10분 후의 안압에서 좌위와 비교하여 와위, 복와위, 측와위에서 모두 안압이 유의하게 상승하였다(p＜0.05). 복와위에서 측정한 안압이 기준 안압에 비해 우안 6.34 mmHg, 좌안 6.43 mmHg 상승하여 가장 높게 측정되었으며 측와위에서 기준 안압에 비해 우안 3.62 mmHg, 좌안 3.63 mmHg, 와위에서 우안 2.42 mmHg, 좌안 2.28 mmHg의 안압 상승이 있었다. 결론: 수면시간대 좌위, 와위, 복와위 및 측와위로 자세변동이 정상인에서 안압 상승을 유발하였다. 수면 습관에 따른 수면시간대 체위의 변동이 안압의 상승을 유발할 수 있다.
Abstract
Purpose: The present study examined how intraocular pressure is affected by changes in sleeping posture (22-2400hours) from the sitting position to the supine, prone, and lateral positions in normal subjects. Methods: Ophthalmological examination was performed on 140 eyes of 70 healthy adult men, and changes in the intraocular pressure were measured according to posture during sleep. The subject was initially relaxed and the base intraocular pressure was measured in the sitting position. In order to reduce the influence of intraocular pressure among the positions,namely, the supine, the prone, and the lateral recumbent positions, the subject was seated for ten minutes before assuming each position. Intraocular pressure was measured twice at 0 and 10 minutes in each position, and the mean of the two values was used for comparison. Results: Compared to the intraocular pressure in the sitting position, intraocular pressure increased significantly in the supine,prone, and lateral positions (p < 0.05). Compared to the base intraocular pressure, the intraocular pressure measured in the prone position showed the largest difference, increasing 6.34 mm Hg in the right eye and 6.43 mm Hg in the left eye. The intraocular pressure measured in the lateral position was 3.62 mm Hg higher in the right eye and 3.63 mm Hg higher in the left eye, and that in the supine position was 2.42 mm Hg and 2.28 mm Hg higher in the right and left eyes,respectively. Conclusions: The change in posture during sleeping from the sitting position to the supine, prone, and lateral positions caused increases in intraocular pressure in normal subjects. The results show that the change in sleeping posture induced by sleeping habits may raise intraocular pressure.
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