两种术式治疗基本型间歇性外斜视的比较

目的 比较双眼外直肌后徙术与单眼一退一截术治疗基本型间歇性外斜视的手术疗效.方法 对行双眼外直肌后徙(A组)和单眼一退一截(B组)手术治疗的49例基本型间歇性外斜视病例进行了回顾性分析.A组26例,B组23例.采用三棱镜加交替遮盖法测定患者戴镜注视6m和33cm调节性视标的第一眼位斜视度,根据看远斜视度手术,所有手术均由同一医生完成.术后平均随访(13.8±9.4)月,疗效评价标准以眼位≤±8Δ为正位.结果 A组眼位正位率为53.8%,B组眼位正位率为82.6%,A、B两组眼位正位率的差异具有统计学意义(x2=4.59 P=0.032),B组眼位正位率高于A组.结论 基本型间歇性外斜视应首选单眼一退一截手术.

Comparison of bilateral lateral rectus recession and unilateral recess-resection for basic intermittent exotropia

Objective To compare the surgical outcomes of bilateral lateral rectus recession and unilateral recess-resection for patients with basic intermittent exotropia.Methods Forty-nine patients with basic intermittent exotropia were enrolled in this retrospective study.Patients were assigned to two groups:group A underwent bilateral lateral rectus recessions (26 cases)and group B underwent unilateral recess-resection (23cases).The exodeviations were measured by the alternate prisms cover test in primary gaze at both distance (6 m) and near (33 cm) with fixation on accommodative targets.The surgery was performed according to the amount of distance deviation.All of the surgeries were performed by the same ophthalmologist.Mean postoperative follow-up period was 13.8±9.4 months.A successful alignment was defined as±8 PD or less inprimary gaze while viewing distant and near targets.Results Successful alignment was achieved in 53.8% and 82.6% of patients in group A and group B,respectively.The difference between the two groups was statistically significant (x2=4.59,P=0.032).Conclusions The unilateral recess-resection is more effective procedure for patients with basic intermittent exotropia.