AIM: To investigate single step combined surgical treatments of Helveston syndrome.

METHODS: A retrospective clinical analysis of 7 cases(14 eyes)with Helveston syndrome in our hospital. There were 14 eyes underwent single step combined surgical treatments, according to the degree of patients with superior oblique overaction and strabismus. A-pattern, dissociated vertical deviation(DVD), function of superior oblique and binocular visual function were examined and analyzed preoperatively and postoperatively.

RESULTS: Bilateral superior oblique intrathecal tenectomy combined bilateral rectus recession were performed in 3 cases(6 eyes). Bilateral superior oblique tenectomy combined unilateral rectus recession were performed in 4 cases(4 eyes). The follow-up was 6mo; 14 eyes of 7 patients attained normal ocular alignment. A-pattern and DVD disappeared. Binocular vision and stereoscopic vision were recovered in 6 eyes of 3 children.

CONCLUSION: Helveston syndrome can be treated with single step combined surgery, and early surgical treatments can help the recovery of binocular visual function.