폭주부족 외사위안의 시기능 훈련 임상사례
원거리보다 근거리에서 외편위량이 큰 폭주부족에 해당하는 양안시 이상 유형을 가진 10세 여아를 대상으로 시기능 훈련을 실시하였다. 시기능 훈련은 brock string, aperture rule, stick prism을 사용하여 안경원과 집에서 실시하였다. 훈련 시작 전 환자의 외편위량은 원거리 8.67±1.15 ⊿, 근거리 26.67±2.89 ⊿이었고, 양성융합버 전스는 원거리 8/10/4 ⊿, 근거리 20/25/16 ⊿이었다. 경사 AC/A비는 1.80:1로 측정되었다. 시기능 훈련 후 외 편위량은 원거리 2.67±1.15 ⊿, 근거리 11.33±1.15 ⊿이었고, 양성융합버전스는 원거리 18/25/20 ⊿, 근거리 30/35/25 ⊿로 나타났다. 훈련 후 원거리와 근거리 모두 외편위량은 감소하고 양성융합버전스 값은 증가하였다.
Vision training was conducted for a 10-year-old girl who have exophoria with convergence insufficiency. Prior to the start of vision training, the patient’s exodeviation was 8.67±1.15 ⊿ at distance and 26.67±2.89 ⊿ at near and positive fusional convergence was 8/10/4 ⊿ at distance and 20/25/16 ⊿ at near. The gradient AC/A ratio was measured as 1.8:1. After the vision training, distant exodeviation was 2.67±1.15 ⊿, and near exodeviation was 11.33±1.15 ⊿ and the positive fusional vergence was 18/25/20 ⊿ at distance and 30/35/25 ⊿ at near. After vision training, both distance and near exodeviation was decreased and the positive fusional vergence value was increased.