Frequency and Clinical Features of Duane's Retraction Syndrome

To evaluate the clinical features of Duane's syndrome in patients who were referred to Nikoo-kari Eye Centre, Tabriz, as a referral centre of northwest of Iran. We retrospectively reviewed medical records of all patients with Duane's syndrome who were referred to the strabismus clinic of our center during a 5-year period (2002-2006). Clinical and demographic characteristics were evaluated. Overall 63 patients including 36 (57.1%) female and 27 (42.9%) male subjects were enrolled which account for 2.5% of patients referred for any type of strabismus. Mean age at presentation was 10.1±7.7 (range 1-35) years. Left, right and both eyes were involved in 60.3%, 25.4% and 14.3%, res-pectively. The most common type of Duane's syndrome was type I (91.6%) followed by type II (6.6%) and type III (1.6%). The most common presenting sign was eye deviation. The prevalence of amblyopia was 19% and 47.6% of patients underwent surgery. The rate of surgical intervention and the frequency of type III Duane's syndrome was very low is our series as compared to other published studies.