方法：对21例42眼内隐斜视引起肌性视力疲劳的患者进行屈光、隐斜、 融合功能检查后进行手术矫正内隐斜。

结果：术后1wk，患者的临床症状得到明显改善，如头痛、复视、眼胀等症状消失。术后1a随访仍未见临床症状复发。检查患者术前、术后1wk、术后1a的远距内隐斜量分别为20.3^△±6.3^△、-3.1^△±1.4^△、0.7^△±1.6^△，近距内隐斜量分别为10.5^△±3.1^△、-1.3^△±0.6^△、1.5^△±0.8^△； 术前与术后相比较，差异具有统计学意义(P<0.01)。患者术前、术后1wk与术后1a的远、近距负向融合力比较，差异无统计学意义(P>0.05)。

结论：斜视矫正手术能明显缓解内隐斜引起的肌性视力疲劳症状，不影响患者的融合力。

METHODS:Twenty-one cases(42 eyes)with muscular asthenopia caused by esophoria were included. After examination of refraction, phoria and fusion function, all cases were given operative treatment to correct esophoria.

RESULTS:At 1wk after surgery, clinical symptoms were improved evidently in all cases, such as headache, diplopia and eye swelling. After followed up for 1a, no recrudescence was found. Before surgery, at 1wk and 1a after surgery, esophoria in the distance were 20.3^△±6.3^△,-3.1^△±1.4^△,0.7^△±1.6^△ respectively and esophoria in the near distance were 10.5^△±3.1^△,-1.3^△±0.6^△,1.5^△±0.8^△ respectively. By comparison of esophoria before and after surgery in different stages separately, the differences were statistically(P<0.01). There was no statistically difference between different stages about negative fusional power in the distance and near distance(P>0.05).

CONCLUSION:Esophoria operation may relieve obviously muscular asthenopia caused by esophoria without changing fusion function.