Snir M, Axer-Siegel R, Shalev B, Sherf I, Yassur Y
Pediatric Ophthalmology Unit, Schneider Children's Medical Center of Israel, Tel Aviv.
Ophthalmology. 1999 May;106(5):992-6. doi: 10.1016/S0161-6420(99)00522-9.
To evaluate the efficacy of slanted recession of the lateral rectus (LR) muscle for exotropia (XT) with convergence weakness.
Predesigned, nonrandomized, comparative trial.
Twelve study patients and six control subjects with XT greater at near than at distance by > or =10 prism diopters (PD).
Twelve consecutive patients underwent slanted LR recession, and six consecutive control subjects underwent standard LR recession.
Between-groups comparison of the postoperative ocular alignment at distance and near, and the difference between them, as well as the stereopsis.
Slanted LR recession reduced the XT to <8 PD in all patients at distance and in 11/12 patients at near. Additionally, the mean difference between the distance and near exodeviation was reduced from 14+/-4.5 PD preoperatively to 2.9+/-2.4 PD postoperatively. All patients in the control group demonstrated postoperative deviations of <8 PD at distance, but all had residual exodeviations >8 PD at near. Three of the study patients gained gross stereopsis postoperatively.
Slanted recession of the LR is superior to standard recession in reducing both distance and near XT and in collapsing the difference between them. This technique may also have a positive impact on gross stereopsis.
评估外直肌斜后徙术治疗伴有集合功能不足的外斜视（XT）的疗效。
预先设计的非随机对照试验。
12例研究患者和6例对照受试者，其近距离外斜视度数比远距离外斜视度数大≥10棱镜度（PD）。
12例连续患者接受外直肌斜后徙术，6例连续对照受试者接受标准外直肌后徙术。
比较两组患者术后远距离和近距离的眼位矫正情况、两者之间的差异以及立体视。
外直肌斜后徙术后，所有患者远距离外斜视度数均降至<8 PD，11/12例患者近距离外斜视度数降至<8 PD。此外，远距离和近距离外斜视度数的平均差值从术前的14±4.5 PD降至术后的2.9±2.4 PD。对照组所有患者术后远距离斜视度数均<8 PD，但近距离均有>8 PD的残余外斜视。3例研究患者术后获得了粗略立体视。
外直肌斜后徙术在减少远距离和近距离外斜视度数以及缩小两者差值方面优于标准后徙术。该技术可能对粗略立体视也有积极影响。
