Abstract
Purpose: The aim of this study was to compare binocular functions such as near point of convergence (NPC), AC/A ratios, heterophoria, accommodation, accommodation lag, positive relative accommodation (PRA), negative relative accommodation (NRA), positive relative convergence (PRC), negative relative convergence (NRC) in normal subjects and convergence insufficiency. Methods: 86 subject (male n=45, female n=41, mean $age{\pm}SD=23.27{\pm}2.85$ years) without amblyopia, strabismus, and ocular pathology were studied. Forty three patients each group were classified as normal subjects and convergence insufficiency group based on AC/A ratio and far and near phoria. Binocular function of the two groups was measured using phoropter. r. Results: The values between normal subjects and convergence insufficiency were 5.71 cm and 7.07 cm for NPC, 5.28 and 2.81 for Heterophria AC/A, 0.92 exo/3.36 exo and 2.17 exo/10.84 exo for far and near phoria, 15.49/23.30/13.30 and 13.50/20.02/9.09 for PRC, respectively. However, there were no significant differences between normal subjects and convergence insufficiency for accommodative amplitude, accommodative lag, PRA, NRA, BI vergence test, BO vergence test, NRC. Conclusions: Both groups were a significant difference for cover test, NPC, Heterophria AC/A, far and near phoria, break point of PRC, and recovery point of PRC.
목적: 정상안과 폭주부족안에서 폭주근점, AC/A비, 사위량, 조절력, 조절래그, 상대조절, 상대폭주 등의 양안시기능 검사값을 비교해 보고자한다. 방법: 사시나 약시 및 안질환이 없는 86명(남 45명, 여 41명 평균연령 $23.27{\pm}2.85$세)을 AC/A비와 원 근거리 사위량을 기준으로 정상안 43명과 폭주부족안 43명으로 분류하여 연구하였다. 두 그룹의 양안시기능은 포롭터를 이용 측정하였다. 결과: 정상안과 폭주부족안은 폭주근점 5.71 cm, 7.07 cm로, 거리차 AC/A비 5.28, 2.81, 원근거리 사위량 0.92 exo/3.36 exo, 2.17 exo/10.84 exo, 양성상대폭주 15.49/23.30/13.30, 13.50/20.02/9.09 등으로 차이가 있었으나, 조절력, 조절래그, 양성상대조절, 음성상대조절, 원거리 개산여력, 폭주여력, 음성상대폭주 등은 현저한 차이가 없었다. 결론: 두 그룹은 차폐검사, 폭주근점, 거리차 AC/A, 원 근거리 사위량, 양성상대폭주 파괴점과 회복점 등에서 유의한 차이가 있었다.