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측정방법에 따른 AC/A비의 조사 분석

A Study and Analysis of Accommodative Convergence/Accommodation Ratio by Measuring Methods

  • 박상재 (경운대학교 안경광학과) ;
  • 곽형빈 (경운대학교 안경광학과) ;
  • 이세희 (경운대학교 안경광학과) ;
  • 곽호원 (경운대학교 안경광학과)
  • Park, Sang-Jae (Dept. of Optometry and Vision Science, Kyungwoon University) ;
  • Kwak, Hyung-Bin (Dept. of Optometry and Vision Science, Kyungwoon University) ;
  • Lee, Se-Hee (Dept. of Optometry and Vision Science, Kyungwoon University) ;
  • Kwak, Ho-Weon (Dept. of Optometry and Vision Science, Kyungwoon University)
  • 투고 : 2013.04.04
  • 심사 : 2013.06.15
  • 발행 : 2013.06.30

초록

목적: 본 연구에서는 다양한 검사 방법을 이용하여 조절자극에 대한 근거리 사위도의 변화를 측정하여 비교 분석함으로서 각 사위그룹의 모든 구간에서 AC/A비를 조사하여 임상에서의 양안시 검사 및 처방 시, 유용한 자료로 제시하고자 한다. 방법: Von Graefe법, Maddox rod법, Howell phoria법 등 3가지 사위측정법을 이용하여 19세 이상 24세 이하 (평균 $20.27{\pm}1.31$세) 남 여 대학생 104명을 대상으로 조절자극에 대한 근거리 수평사위도를 측정하여 측정방법과 연구 대상자의 사위방향에 따라 AC/A비를 조사 분석하였다. 결과: 모든 측정방법과 구간에서 검사렌즈를 음(-)의 방향으로 가입함에 따라 사위도는 양(+)의 방향 즉 내편위로 변화하였다. 이때 각 구간의 변화량은 AC/A비를 뜻하며 이 값은 각 사위그룹에서 측정방법별, 구간별로 일정하지 않았지만 대체적으로 비슷하게 나타났다. 그러나 사위그룹들 사이에서는 AC/A비는 내사위 그룹이 가장 높게 나타났으며 정위, 외사위 그룹 순 이였다. 또한 von Graefe법으로 측정 시, 외사위 그룹에서 검사렌즈 +2.00 D로 조절이완 시켰을 때 $1.568{\pm}1.937 $ ${\Delta}/D$, 검사렌즈 -1.00 D로 조절시켰을 때 $2.527{\pm}2.253$ ${\Delta}/D$, 그리고 Howell phoria법으로 측정 시, 내사위 그룹에서 검사렌즈 +2.00 D, +1.00 D로 조절이완 시켰을 때 $5.521{\pm}1.337$ ${\Delta}/D$, $5.593{\pm}1.623$ ${\Delta}/D$로 검사렌즈 -2.00 D로 조절시켰을 때 $4.687{\pm}1.643$ ${\Delta}/D$와 각각 통계적으로 유의한 차이를 보였다. 결론: 외사위 그룹에서 (-) 렌즈를 가입하여 조절시켰을 때가 조절이완 시보다 AC/A비가 높게 나왔으나 내사위 그룹에서는 (+) 렌즈로 조절이완 시켰을 때가 조절 시보다 AC/A비가 높게 나타났다.

Purpose: The aim of this study was to propose effective data for the clinical examinations of binocular vision by comparative analysis of measuring the near horizontal phoria according to accommodative stimulations. Methods: It carried out near horizontal phorias, targeting 104 college students (50 males and 54 females) aged between 19 and 24 ($20.27{\pm}1.31$). It made a comparative analysis of changes in near horizontal phoria according to accommodative stimulations by using the von Graefe, Maddox rod and the Howell phoria methods respectively. We have also investigated the AC/A ratio in all phoria groups. Results: As the additional lenses were changed to the negative (-) diopter, the near horizontal phoria changed to the esodeviation. At this time, the rate of change in the section signifies the AC/A ratio, and the values were not consistent based on the evaluating methods or on each section. The AC/A ratio of the esophoria group appeared the largest value in all groups. As a result of analyzing AC/A ratio at the exophoria group using the von Graefe method, the AC/A ratio was $1.568{\pm}1.937$ ${\Delta}/D$ on the additional lenses +2.00 D and $2.527{\pm}2.253$ ${\Delta}/D$ on the additional lenses -1.00 D and at the esophoria group using the Howell phoria method, the AC/A ratio was $5.521{\pm}1.337$ ${\Delta}/D$, $5.593{\pm}1.623$ ${\Delta}/D$ on the additional lenses +2.00 D, +1.00 D and $4.687{\pm}1.643$ ${\Delta}/D$ on the additional lenses -2.00 D. These were significant differences statistically. Conclusions: In the exophoria group, when the (-) lenses were added, the averages of the AC/A ratio were shown to be high but in the esophoria group, when the (+) lenses were added, the of AC/A ratio was high.

키워드

참고문헌

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피인용 문헌

  1. Comparison between Stimulus and Response AC/A Ratios for Each Phoria with Additional Spherical Power vol.19, pp.3, 2014, https://doi.org/10.14479/jkoos.2014.19.3.345
  2. The Change of the Near Eye Position according to the Spectacle and Contact Lens Wearing vol.3, pp.4, 2015, https://doi.org/10.15205/kschs.2015.3.4.435
  3. 폭주근점 변화의 AC/A비 대체 평가지표에 대한 가능성 vol.14, pp.10, 2013, https://doi.org/10.14400/jdc.2016.14.10.375