Clinical Study on Overeorrective Surgical Treatment of Intermittent Exotropia

ABSTRACT

The results of 54 consecutive patients with intermittent exotropia treated with surgery at least 6 months follow-up are reviewed. The purpose of this paper was to study retrospectively the course of patients who had overcorrective treatment of intermittent exotropia and the specific parameters examined included the age of the patient at the time of onset; age of patient at the time of the initial surgery; length of time between the onset of the exodeviation and initial surgery; and distance near deviation effect on surgical result. The results were as follows; 1. Average age of onset was 3.7 years and the average age of operation was 6.7 years. 2. Mean duration between the first hospital visit and operation was 6.3 months. 3. The angle of deviation less than 30 delta was found in 72.2% of cases. 4. Average degree of refractive errors was -1.187 in cycloplegic refraction. 5. The final satisfactory surgical result was achieved in 76% of the cases. The cases showing 5~15 delta overcorrection immediate postoperatively showed the most satisfactory final outcome and this was statistically significant. (P0.05).