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目的 探讨间歇性外斜视最佳手术时机 ,以求达到矫正斜视并获得完善的双眼单视功能目的。方法 采用颜氏远用和近用随机点立体图 ,对 69例间歇性外斜视进行手术前后立体视锐度测定 ;用三棱镜法测量远近斜视角 ;用同视机法测定双眼单视功能。结果 69例间歇性外斜视中术前 4例通过远立体视 ,4 7例通过近立体视 ,二者有高度显著性差异 (P <0 0 0 1 ) ;术后 37例通过远立体视 ,与术前比较有高度显著性差异 (P <0 0 0 1 ) ,而近立体视手术前后无明显差异 ;病程愈长 ,术后获得立体视者愈少 ,病程短则相反。结论 通过测定远近立体视 ,合理掌握间歇性外斜视手术时机 ,对其预后估计及疗效评价有重要意义。
Objective To explore the best timing of intermittent exotropia in order to achieve correction of strabismus and to obtain a perfect binocular vision function purposes. Methods Using far and near random stereoscopic images, 69 cases of intermittent exotropia were measured before and after stereoscopic acuity; with prism method to measure distance perspective; with the same method of binocular vision function. Results In 69 cases of intermittent exotropia, 4 cases passed distal stereopsis and 47 cases passed near stereopsis, there was a highly significant difference between them (P 0 01). After operation, 37 cases passed distal stereopsis, There was a significant difference between preoperative and postoperative stereopsis (P <0.01). There was no significant difference between preoperative and postoperative stereopsis. The longer the course of disease, the less postoperative stereopsis, the shorter the duration of disease. Conclusions By measuring the distance stereo vision, reasonable control of the timing of intermittent exotropia, the prognosis of its prognosis and efficacy evaluation of great significance.