New Varices Modalities in Management of Intermittent Exotropia

Purpose: To compare the surgical outcome of three treatment modalities used for correction of convergence insufficiency intermittent exotropia. Materials and methods: An interventional prospective study that included 105 cases with convergence insufficiency intermittent exotropia. Study that was conducted at eye hospital in Muscat city Oman country region, KSA from May 2015 to April 2018. Patients were randomly allocated between three treatment groups according to their order of presentation: group A included patients treated with bilateral lateral rectus recession, group B included patients treated with bilateral medial rectus tucking and group C that included patients treated with bilateral medial rectus resection. Results: No statistical significance difference (P > 0.05) was found between the 3 groups as regards postoperative orthophoria and recurrence of exotropia. Group A showed a statistical significant difference (P < 0.05) with both groups B and C as regards less postoperative overcorrection and higher postoperative under correction in older age group during the follow up duration of the study. Also, bilateral medial rectus resection or tucking were more effective in older age group but can induce overcorrection in younger age group. Conclusion: The three approaches used in the study are equally effective for surgical correction of exotropia. However, bilateral lateral rectus recession could have significantly less postoperative overcorrection and higher postoperative under correction than bilateral medial rectus tucking or resection