To evaluate the preoperative characteristics and the results of surgically treated intermittent exotropia, I analyzed consecutive 30 patients who underwent surgery at ophthalmology department from March 1994 to July 1995 (follow up period: over
than 3
months). I examined visual acuity and deviation angle preoperatively1 day, 1 week, 3 week, 6 week, 3 months, 6 months, 12 months postoperatively. The following preoperative characteristics and surgical results were obtained.
Of 30 patients, the mean onset of age was 3.1 years, male occupied 50%, female occupied 50%, The basic type which was shown in 76.7% was the most frequent one, divergence excess type was in 16.7%, convergence insufficiency type was in 6.7%. The
preoperative distant deviation angle ranged from 16PD to 70PD(mean, 33PD). The incidence of operative method for monocular lateral rectus recession, monocular lateral rectus recession and medial rectus resection, bilateral lateral rectus
recession,
bilateral lateral rectus recession and monocular medial rectus resection, monocular lateral rectus recession and bimedial resection were 10%, 53.3%, 23.4%, 10%, 3.3% respectively. The surgical results at postoperative 3 and 6 months were obtained
in
76.7%(23/30), 73.7%(14/19) of the patients within 10PD angle of deviation. The incidence of undercorrection over 10PD was 26.3%(5/19), consecutive esotropia over 10PD did not developed in any of our patients at 6 months postoperatively.
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