Journal of Korean Ophthalmic Optics Society (한국안광학회지)

The Korean Ophthalmic Optics Society (한국안광학회)
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Changes of Body Balance on Static Posture According to Types of Induced Ametropia

정적자세에서 유도된 비정시의 유형에 따른 신체균형의 변화

  • 김상엽 (강원대학교 안경광학과) ;
  • 문병연 (강원대학교 안경광학과) ;
  • 조현국 (강원대학교 안경광학과)
  • Received : 2014.05.09
  • Accepted : 2014.06.18
  • Published : 2014.06.30
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Abstract

Purpose: This study was performed to investigate the effect of induced ametropia on static posture for body balance. Methods: Twenty subjects (10 males, 10 females) of average age $23.4{pm}2.70$ years were participated and ametropia(binocular myopia; BM, simple myopic anisometropia; SMA, binocular hyperopia; BH, and simple hyperopic anisometropia; SHA) were induced with ${pm}0.50D$, ${\pm}1.00D$, ${\pm}1.50D$, ${\pm}2.00D$, ${\pm}3.00D$, ${\pm}4.00D$, ${\pm}5.00D$, respectively. General stability (ST), weight distribution index (WDI), and fall risk index (FI) were measured using TETRAX the biofeedback systems. Each index of the body balance was evaluated for 32 seconds in each ametropic condition and those value was compared with the value in fully corrected condition. Results: The ST showed significant increase from +0.50 D under condition of BM, from +1.00 D under condition of SMA, from -1.00 D under condition of BH, and from -1.50 D under condition of SHA compared with under condition of fully corrected condition, respectively. The FI showed significant increases from +4.00 D under condition of BM, from -1.00 D under condition of BH, and from -1.50 D under condition of SHA. The WDI show no change in all ametropia condition. Conclusions: Whatever ametropia is, uncorrected refractive error could reduce the general stability of body balance and increase the falling risk.

목적: 정적자세에서 유도된 비정시가 신체균형에 미치는 영향을 알아보았다. 방법: 평균 연령 $23.4{pm}2.70$세의 20명(남 10, 여 10)을 대상으로 ${pm}0.50D$, ${\pm}1.00D$, ${\pm}1.50D$, ${\pm}2.00D$, ${\pm}3.00D$, ${\pm}4.00D$, ${\pm}5.00D$의 렌즈를 사용하여 비정시(양안근시, 단순근시성부동시, 양안원시, 단순원시성부동시)를 유도하였다. TETRAX the biofeedback system을 이용하여 신체안정성지수, 체중분포지수, 낙상지수를 측정하였다. 신체균형 검사는 각 조건 당 32초간 측정되었고, 반복측정 후 완전교정상태에서 측정한 값과 비교하였다. 결과: 안정성지수는 양안근시의 경우 +0.50 D부터, 단순근시성부동시의 경우 +1.00 D부터, 양안원시의 경우 -1.00 D부터, 단순원시성부동시의 경우 -1.50 D부터 완전교정상태와 비교하여 유의하게 증가되었다. 낙상지수는 양안근시의 경우 +4.00 D부터, 양안원시의 경우 -1.00 D부터, 단순원시성부동시의 경우 -1.50 D부터 유의하게 증가되었다. 모든 비정시 유형에서 체중분포지수의 변화는 없었다. 결론: 비정시의 유형에 상관없이 굴절이상의 미교정은 신체균형의 전반적인 안정성을 감소시키고, 낙상의 위험도를 증가시킬 수 있다.

Keywords

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