间歇性外斜视儿童AC/A比率142例分析  

Analysis of the AC/A ratio in 142 cases of children with intermittent exotropia

作　　者：谭星平[1] 李凤云[1] 杨昌全[1] 周明敏[1] 

机构地区：[1]中南大学湘雅医院眼科,湖南长沙410008

出　　处：《眼视光学杂志》2006年第4期263-264,共2页Chinese Journal of Optometry & Ophthalmology

摘　　要：目的探讨间歇性外斜视儿童AC/A比率的特点。方法用英国CCAS公司生产的2001型同视机测量142例间歇性外斜视儿童AC/A比率,根据屈光性质和平时有无戴镜分组。结果间歇性外斜视儿童近视眼裸眼AC/A比率低(1.43±2.16),从未戴镜者裸眼AC/A比率更低(0.93±1.49),戴矫正眼镜后AC/A比率(2.34±2.29)接近正常;间歇性外斜视儿童远视眼裸眼AC/A比率高(3.11±1.84),一直戴矫正眼镜者裸眼AC/A比率更高(3.28±1.09),戴镜后AC/A比率降低(2.54±1.53)接近正常。结论间歇性外斜视儿童近视眼AC/A比率低,与调节有关;间歇性外斜视儿童远视眼AC/A比率高,与调节无关。Objective To investigate the eharacteristics of the AC/A ratio in children with intermittent exotropia. Methods The AC/A ratio was measured in 142 cases of children with intermittent exotropia using a type 2001 synoptophore mantffaetured by the British GCAS company. The children were divided into groups hosed on the type of refractive error and whether or not spectacles were worn. Results The AC/A ratio for the uncorrected visual acuity in myopic children with intermittent exotropia was low （1.43 3= 2.16）, and the uncorrected AC/A ratio for those who had never worn spectacles was even lower （0.93 3= 1.49）. After corrective spectacles were worn, the. AC/A ratio approached a normal value （2.343=2.29）. The AC/A ratio for uncorrected visual acuity in hyperopie children with intermittent exotropia was high （3.11 3= 1.84）, and the uncorrected AC/A ratio for those who had always worn spectacles was even higher （3.28 3= 1.09）. The AC/A ratio decreased （2.54± 1.53） and approached a normal value after spectaeles were worn. Conclusion The AC/A ratio in myopic children with intermittent exotropia was low and was related to adjustments; the AC/A ratio in hyperopic children with intermittent exotropia was high and was not related to adjustrmnts.

关 键 词：AC/A比率 外斜视 儿童 近视 远视 

分 类 号：R777.4[医药卫生—眼科]