方法：选择80例局部麻醉手术的水平性斜视患者，分为试验组和对照组，用7.5g/L罗哌卡因混合20g/L利多卡因分别作眼球筋膜囊下麻醉和结膜下浸润麻醉，并进行疼痛和眼心反射的评估。

结果：患者80例均能在局部麻醉下顺利完成手术，疼痛的评估结果：根据视觉模拟评分法(VAS)，试验组评为“优”者12例，“良”者21例，“可”者6例，“差”1例。对照组“优”者2例，“良”者25例，“可”者12例，“差”1例。两组进行秩和检验，P<0.01，两组有显著差异。术中牵拉眼内外直肌数量和出现眼心反射情况为：试验组牵拉肌肉共74条，发生眼心反射26次，对照组牵拉肌肉共76条，发生眼心反射48次，采用χ²检验，P<0.01，两组间眼心反射发生率差异有统计学意义。两组间眼心反射等级差别采用秩和检验，P>0.05，在发生眼心反射患者中，两组间眼心反射等级分布差异无统计学意义。

结论：应用7.5g/L罗哌卡因混合20g/L利多卡因作眼球筋膜囊下麻醉在斜视手术应用有一定的优越性，值得推广应用。

METHODS: Totally 80 patients with horizontal strabismus who underwent local anaesthesia surgery were randomly divided into test group and control group. All cases received either sub-tenon anesthesia or subconjunctival anesthesia with 7.5g/L ropivacaine and 20g/L lidocaine mixtures randomly. Intraoperative and postoperative pain scores and oculocardiac reflex were assessed.

RESULTS: All 80 cases were successful completion of the surgery under local anesthesia. According to visual analogue scale(VAS), excellent 12 cases, good 21 cases, fair 6 cases, poor 1 case in test group and excellent 2 cases, good 25 cases, fair 12 cases, poor 1 case in control group. There was significant difference by rank sum test(P<0.01). The number of ocular rectus muscle and oculocardiac reflex condition during operation: muscular traction in test group was 74, oculocardiac reflex was 26; in control group it was 76 and 48 respectively. The incidence of oculocardiac reflex between the two groups was significant difference by χ² test(P<0.01). Rank sum test were used in oculocardiac reflection grade of two groups, there was no statistically difference(P>0.05).

CONCLUSION: Sub-tenon anesthesia using a 7.5g/L ropivacaine and 20g/L lidocaine mixture proves to be an efficient procedure for strabismus surgery, which is worth popularizing and applying.