斜视手术对kappa角影响及临床意义

Clinical study of angle kappa characteristic after strabotomy

目的研究斜视手术对kappa角的影响，并探讨其与术后立体视功能恢复的关系。方法回顾性研究水平性斜视手术31例46眼，总结分析手术前后kappa角特征，对比立体视功能改善与无变化手术眼之间kappa角差异，进行计量资料t检验统计学分析。结果手术后所有术眼均表现为负kappa角值减小，与手术前差异有统计学意义（t1=1．72Pl=1．03；t2=1．44P2=1．04；t3=1．56P，=0．03）而立体视组与立体视元明显功能改善者之间，kappa角差值无统计学意义。结论斜视手术后术眼kappa角数值显著减小，可能给予立体视恢复提供解剖基础，但与立体视恢复无明显对应关系。

Objective To investigate the angle kappa characteristic before and after strabismus surgery for finding regular pattern between angle kappa and stereo-visual function. Methods Retrospective study of angle kappa in 46 eyes of 31 cases with horizontal strabismus before and after strabismus surgery. We try to analyze the difference between numerical datas in two situations and contrast the angle kappa in cases of stereo-vision and non-stereovision with t-test of measurement data. Results All cases got less angle kappa post-operation and seem significant difference with the data before operation. （ t1 = 1.72, P1 = 1.03 ; t2 = 1.44, P2 = 1.04 ; t3 = 1.56, P3 = 0. 03）. The angle kappa of eases with better stereovision showed no difference to others. Conclusion As a anatomy basic data of less degree angle kappa after strabismus surgery, it seems no corresponding relationship with stereo-vision.