儿童微小度数斜视对立体视觉影响的临床研究

Study on Effect of Microstrabismus in Children to the Stereopisis

目的探讨儿童微小度数斜视矫正前后的立体视觉.方法采用颜氏随机点同视机图片及近用立体视检查图本,对53例儿童微小度数斜视患者进行矫正前后远、近距离立体视觉定性与定量的测定.并且比较不同程度的屈光参差、不同视力对远距离立体视觉的影响.结果53例微小度数斜视患儿矫正前仅32.07%有远距离周边立体视觉(800'～400'),9.43%有黄斑立体视觉(200'～100'),3.77%有中心凹立体视(60').矫正后且随访1～2年41.5%有远距离周边立体视觉,22.64%有黄斑体视,7.54%有中心凹立体视.两者对比差异有显著性,x2=8.60,P＜0.01.屈光参差程度不同对远距离立体视锐度的影响差异有显著性,x2=29.16,P＜0.01.不同视力对远距离立体视锐度的影响差异有显著性,x2=53.36,P＜0.01.结论儿童微小度数斜视对立体视觉的影响与患儿的视力、屈光参差的程度密切相关,屈光参差的程度越大,视力越差,对立体视觉发育的不良影响越大.

Objective To evaluate the change of stereopsis for microstrabismus before and after len correction.Methods Using Yan'syn- optophore random-dotsterebtame and near stereoacuity chart,measurenent of distance and near stereocacuity in 53 case vith microstrebismus, The grade of stereoacuity before and after len correction was analyzed.Results After len correction,the changes of obtaining stereopsis were bet- ter than precorrect.Furthermore,the debree of anisometripia and deth of amblyopia showed a sibnificant correlation.Conclusion The greatier of the anisometropia,the dether of amblyopia with microstrabimus in children,the larger the stereopsis is harmed.