J Korean Ophthalmol Soc.  1995 Jul;36(7):1228-1233.

Changed Angle Deviation after Occlusion Therapy in Monocular Exotropia with Amblyopia

• Lee BT
• Rah SH
• Lee JH

Abstract

Changes of deviated angle in monocular exotropic patients with amblyopia were studied in 18 patients who had undergone occlusion therapy to investigate the possibility that occlusion may have an influence on the amount of preexisting exodeviation and fixation. Average follow up time was 9.7 months and average age was 6.3 years old. The size of the deviation angle was changed from 27.00 +/- 6.57 Prism diopter(PD) to 21.05 +/- 10.07 PD at near fixation, and from 28.56 +/- 8.67 PD to 22.05 +/- 10.08 PD at distance fixation(P<0.001). The size of deviation angle decreased more than 6 PD in 7 cases(38.9%) at near fixation and in 8 cases(44.4%) at distance fixation. The preference pattern was changed from monocular to alternating type in 14 cases(77.8%). After occluson in monocular exotropic patients with amblyopia, the visual acuity was improved and deviated angle was changed more than 6 PD. The changed angle was decreased or increased, but one patient was increased less than 5 PD. The remained deviation of angle after occlusion was less than 10 PD in 2 patients and fixation pattern was changed to exophoria in 1 patient. This results were not required surgical treatment in 3 patients. This result suggest that we should be attempt to treat by occlusion before surgery, because the occlusion therapy is helpful to improvement of visual acuity, deviated angle and fixation pattern.

Keyword

Amblyopia; Monocular fixation; Occlusion

MeSH Terms

Amblyopia*
Exotropia*
Follow-Up Studies
Humans
Visual Acuity