굴절조절내사시 환자의 조절눈모음비

Abstract

Purpose: The goals of the present study were to measure a ratio of accommodative-convergence to accommodation (AC/A ratio) in child patients with refractive accommodative esotropia (RAET) and to compare it to the ratio in normal children. Methods: Patient age, gender, and refractive errors were examined. The deviation angles were measured at near and distance using a prism cover test and were followed by the measurement of the interpupillary distance. The AC/A ratio was calculated using a heterophoria and a gradient method. Results: The present study consisted of 59 patients, 38 patients with RAET and 21 normal children. The mean ages were 9.6 years in patients with RAET and 9.0 years in the normal children. The refractive errors in spherical equivalent were shown to be 4.6D in the right eye and 4.5D in the left eye in patients with RAET and -0.4D and -0.5D in the normal children. The mean values of the AC/A ratio using a gradient method were 1.8 in patients with RAET and 2.2 in the normal children(p=0.44). According to the heterophoria method, the AC/A ratio was 6.2 in patients with RAET and was 5.4 in the normal children(p=0.04). Conclusions: The AC/A ratio of child patients with RAET was higher than that of normal children when using a heterophoria method. However, there was no difference in the AC/A ratio between the normal children and RAET child patients when using gradient method

목적: 굴절조절내사시 환자군의 조절눈모음비를 측정하여 정상아군과 비교해 보고자 하였다. 대상과 방법: 대상환자의 나이, 성별, 굴절이상을 조사하였으며, 프리즘가림검사를 통해 근거리, 원거리 사시각을 측정하고, 동공간 거리를 측정하였다. 조절눈모음비는 근, 원거리편위이용법과 계단적검사법으로 각각 산출하였다. 결과: 대상환자는 총 59명이었으며, 굴절조절내사시 환자군은 38명, 정상아군은 21명이었다. 굴절조절내사시 환자군의 나이는 평균 9.6세, 정상아군은 9.0세였다. 굴절이상은 굴절조절내사시 환자군에서 평균 구면렌즈대응치로 우안 +4.6D, 좌안 +4.5D로 나타났으며, 정상아군은 우안 -0.4D, 좌안 -0.5D였다. 굴절조절내사시 환자군의 평균 조절눈모음비는 계단적검사법에 의해 1.8, 정상아군은 2.2였으며(p=0.44), 근, 원거리편위이용법에 의해 굴절조절내 사시 환자군의 경우 6.2, 정상아군은 5.4였다(p=0.04). 결론: 굴절조절내사시 환자군의 조절눈모음비는 정상아군에 비해 근,원거리편위이용법으로 측정할 때는 높았으나, 계단적검사법으로 측정할 때는 차이가 없었다.