目的分析改良Yokoyama术联合内直肌后退术治疗高度近视眼限制性内下斜视的临床疗效.方法回顾性系列病例研究.选取2013年2月至2016年12月中南大学湘雅医院眼科收治的高度近视眼限制性内下斜视患者9例(14只眼),所有患者行改良Yokoyama术,即将上直肌颞侧1/2肌束与外直肌上方1/2肌束于肌止端后12~14 mm处联结,并联合内直肌后退术,观察术前及术后6个月眼位、眼球运动的改变,行眼眶CT检查观察术前、术后眼外肌及眼球位置的变化.统计学分析采用Mann-Whitney U检验.结果 9例(14只眼)高度近视眼限制性内下斜视患者中女性5例、男性4例,年龄(60±10)岁,高度近视眼病史(33.33±6.61)年,屈光度数(-23.32±5.95)D,眼轴长度(33.04±2.63)mm,术中内直肌退后(7.2±2.1)mm(4.0~10.0 mm).术后6个月,内斜视度数由术前的130(80~140)三棱镜度(PD)减小到0(0~10)PD,下斜视度数由术前的20(15~25)PD减小到0(0~5)PD;外转受限由术前的-3(-4~-1)级降低到-1(-2~0)级,上转受限由术前的-2(-4~-1)级降低到0(-1~0)级,差异均有统计学意义(Z=-2.67、-2.70、-3.35、-3.24;P=0.008、0.007、0.001、0.001).共3例患者手术前后眼眶CT图像纳入对比分析,术前CT可见上直肌、外直肌分别向鼻侧及下方移位,眼球后部紧贴颞上方眶壁;术后CT可见眼球移位角度的平均缩小比率为28.97%,眼球后部回纳肌锥内.结论改良Yokoyama术联合内直肌后退术能有效矫正高度近视眼限制性内下斜视,恢复眼球在眼眶内的解剖位置,明显改善眼球运动功能,6个月随访临床效果满意.
Objective To analyze clinical effects of modified Yokoyama's surgery combined with medial rectus muscle recession for treatment of high myopic strabismus fixus. Methods Retrospective analysis of records of 9 patients (14 eyes) with high myopic strabismus fixus treated from February 2013 to December 2016 in the Department of Ophthalmology, Xiangya Hospital, Central South University. All patients underwent modified Yokoyama's surgery. The temporal 1 / 2 of the superior rectus (SR) and the superior 1 / 2 of the lateral rectus (LR) were united 12 to 14 mm, combined with medial rectus muscle recession. The angle of deviation of primary position, the mobility of the affected eye, and the change of CT imaging were observed and analyzed before and 6 months after surgery. Statistical analysis was performed by Mann-Whitney U test. Results The patients were 5 females and 4 males with an average age of (60±10) years. The duration of high myopia was (33.33±6.61) years. The refractive power was (-23.32±5.95) D, and the axial length was (33.04 ± 2.63) mm. The recession mount of medial rectus was (7.2 ± 2.1) mm (4.0-10.0 mm) intraoperatively. At 6 months, the median esotropia improved from 130 (80-140) prism diopter (PD) to 0 (0-10) PD, and the hypotropia from 20 (15-25) PD to 0 (0-5) PD. The median abduction limitation decreased from -3 (-4--1) to -1 (-2-0), and the median limitation of elevation decreased from -2 (-4--1) to 0 (-1-0). The angle of esotropia and hypotropia significantly improved (Z=-2.67,-2.70;P=0.008, 0.007), and the restriction of abduction and elevation decreased (Z=-3.35,-3.24;both P=0.001). Only 3 patients' CT images were enrolled in a comparative study. Preoperative orbital CT scans showed inferior LR displacement and medial SR displacement with the posterior portion of the eyeball to the superotemporal quadrant of the orbit. After surgery, the mean reduction ratio of dislocation degree of the 3 patients was 28.97%, the dislocation of LR and SR was reduced, and the posterior global part was correctly
Chinese Journal of Ophthalmology
Ophthalmologic surgical procedures