정상안에서 자세 변화에 따른 안압과 안구계측치의 변화
Intraocular Pressure and Ocular Biometry Change of Healthy Eyes in Postural Variation
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목적: 정상안에서 자세의 변화에 따른 안압과 안구계측치의 변화를 알아보기로 하였다. 대상과 방법: 젊은 정상인 48명의 48안을 대상으로 입위, 좌위, 와위, 복와위에서 TonoPenⓇ 및 A-scan 초음파 검사를 이용하여 안압,중심전방깊이 및 안축장을 측정하고 분석하였다. 결과: 자세에 따른 평균 안압은 복와위 19.68 ± 2.15 mmHg, 와위 17.19 ± 1.33 mmHg, 좌위 16.49 ± 1.76 mmHg, 입위 15.33 ± 1.34mmHg 순으로 유의한 차이를 보였다(p＜0.01). 자세에 따른 평균 중심전방깊이는 입위 3.68 ± 0.35 mm, 와위 3.63 ± 0.32 mm, 좌위3.59 ± 0.34 mm, 복와위 3.47 ± 0.30 mm 순으로 와위와 좌위 간의 차이는 유의하지 않았으나, 다른 자세 간 전방깊이에서는 유의한차이를 보였다(p＜0.01). 선형회귀분석 결과, 전방깊이는 복와위에서만 안압에 대해 의미 있는 상관성을 가지는 것으로 나타났다(R2=0.139, p＜0.01). 결론: 자세 변화에 따라 안압과 중심전방깊이는 유의한 변화를 보였다. 중심전방깊이는 복와위에서만 안압에 대해 의미 있는 상관성을가졌다.
Abstract
Purpose: To investigate intraocular pressure (IOP) and ocular biometry change according to the posture change in healthy eyes. Methods: Forty eight eyes of 48 healthy young subjects were enrolled. IOP, central anterior chamber depth (cACD), and axial length were measured after keeping each position for 10 minutes (upright, sitting, supine, and prone positions) by using the TonoPen® and A-scan ultrasonography. Results: Mean IOP was 19.68 ± 2.15 mm Hg in prone position, 17.19 ± 1.33 mm Hg in supine position, 16.49 ± 1.76 mm Hg in sitting position, and 15.33 ± 1.34 mm Hg in upright position. Difference among the positions was statistically significant (p < 0.01). Mean cACD was 3.68 ± 0.35 mm in upright position, 3.63 ± 0.32 mm in supine position, 3.59 ± 0.34 mm in sitting position, and 3.47 ± 0.30 mm in prone position. Difference among the positions was statistically significant (p < 0.01) except for the difference between supine and sitting position. Linear regression analysis revealed that cACD was significantly associated with IOP in prone position (R2 = 0.139, p < 0.01). Conclusions: There was a significant change in IOP and cACD according to the posture change. cACD was significantly associated with IOP only in prone position.
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