한국안광학회지 (Journal of Korean Ophthalmic Optics Society)

한국안광학회 (The Korean Ophthalmic Optics Society)
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머리 위치에 따른 사위도의 변화

Head Posture-Induced Phoria Deviation

  • 투고 : 2010.02.01
  • 심사 : 2010.06.19
  • 발행 : 2010.06.30
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초록

목적: 머리 위치에 따른 사위도 변화를 평가하고, 외안근의 불균형과 관련하여 좌 우안의 프리즘 량을 달리할 필요성을 확인하고자 하였다. 방법: 20~30세 남자 44명(88안), 여자 16명(32안)을 대상으로 차폐검사, 자각적 굴절검사, 사위검사 및 융합여력검사를 실시하였다. 머리기울임 검사, 얼굴돌림 검사에 따른 사위 변화량을 비교분석하기 위해 본 그래페를 이용하여 측정하였다. 결과: 머리기울임과 얼굴돌림에 따른 사위도 변화는 Morgan 표준의 수평사위 비정상군에서 유의한 차이를 보였고(p<0.05), 특히 근거리 Sheard 기준으로 수평사위 처방이 필요한 그룹에서 근거리 수평사위 변화량이 크게 나타났다(p<0.05). 수평사위 비정상군의 원거리 Sheard 기준으로 처방이 필요한 그룹과 필요하지 않은 그룹 모두 머리 위치에 따라 사위도 변화는 근거리일 경우 보다는 적었다. 결론: 수평사위 비정상군의 Sheard 기준 처방이 필요한 그룹에서 근거리 머리기울임, 얼굴돌림의 수평사위 변화량이 크게 나타났다. 따라서 근거리 사위에서 프리즘 처방을 해야 할 때 좌 우 외안근의 불균형의 존재를 확인하여 좌 우안에 프리즘량을 달리 처방할 필요성이 있는 것으로 본다.

Purpose: The purpose of this study was to evaluate how phoria variations would vary with head positions, as well as to review the need to differentiate prism placement over either eye in a relation to the imbalance of the extraocular muscle. Methods: This study was carried out with 44 males (88 eyes) and 16 females (32 eyes) aged between 20 and 30. For all subjects, testings were performed using cover test, subjective refraction, phoria and vergence test. To analyze phoria variations comparatively for the head tilt test and the face turn test, phoria deviation were measured using the von Graefe. Results: For the phoria variation related with head tilt and face turn, a significant difference was observed in the group judged to be abnormal on the horizontal phoria of Morgan' norm (p<0.05); especially in patients who needed near prescription of Sheard's criterion, a higher variation was observed (p<0.05). The abnormal group was composed of patients who needed distance prescription of Sheard's criterion and ones who did not need the prescription, all of whom showed phoria variations, but the mean value was less than the near. Conclusions: With regard to the head tilt and face turn related phoria level, the patients who needed near horizontal prism prescription of Sheard's criterion showed a remarkably higher variation. Altogether, it is deemed to check whether extraocular muscles are ill-balanced in both eyes previously to determine the prism power on phoria level to the end that each of prism powers may be accurately determined.

키워드

참고문헌

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