Surgical Results in Basic Exotropia of Moderate Degree

ABSTRACT

The purpose of this study is to assess the postoperative stability for exotropia by comparing the deviation at postoperative 2 years to those at 1 day, 1 week, 1 month, 3 months, 6 months, and 1 year after surgery in children with basic exotropia of between 25 and 30 prism diopters. They were classified into two groupsone group[n=20]with unilateral lateral rectus recession and medial rectus resection, and another group[n=15] with bilateral lateral rectus recession. There was no difference in age at the time of surgery or preoperative angle of deviation between the two groups. Exodrift occurred according to an increase in follow-up and maximal correlation between postoperative 6 months and 2 years in both groups[r=0.85, r=0.81, respectively, p>0.05]was noted. Success rates at postoperative 2 years were 65%and 60%, respectively[p>0.05]. In conclusion, long-term surgical results for exotropia of moderate degree and basic type could be predicted from angle of deviation at postoperative 6 months, regardless of the type of surgery.