The Surgical Outcome of Intermittent Exotropia with Type Conversion Subsequent to Preoperative Part-Time Occlusion Therapy.
10.3341/jkos.2012.53.11.1669
- Author:
Jae Hoon NA
1
;
Young Woo SUH
;
Yoon Ae CHO
Author Information
1. Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea. earth317@yahoo.co.kr
- Publication Type:Original Article
- Keywords:
Intermittent exotropia;
Part-time occlusion;
Type conversion
- MeSH:
Exotropia;
Humans;
Ocular Motility Disorders;
Retrospective Studies
- From:Journal of the Korean Ophthalmological Society
2012;53(11):1669-1673
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the effects of converted intermittent exotropia type with part-time occlusion therapy on final postoperative outcomes. METHODS: The present study included 140 consecutive intermittent exotropia patients. On the patient's first visit, the type of intermittent exotropia was determined according to the deviation angle. After preoperative part-time occlusion therapy, the type of intermittent exotropia was reevaluated. The surgical success rates of each group was compared retrospectively according to the converted type. RESULTS: At the first visit, the basic type was the most prevalent (n = 112), followed by convergence insufficiency type (n = 18) and pseudo-divergence excess type (n = 10). Mean deviation angle on the first visit was 25.42 +/- 6.05 PD at distance and 26.19 +/- 8.20 PD at near. There were significant changes in near deviation angle after part-time occlusion in patients with the basic and convergence insufficiency types (p = 0.045, 0.03, respectively). Twenty-seven patients who had converted from basic type to pseudo-divergence excess type and from convergence insufficiency type to basic type showed better surgical success rate (89%) than other patients (69%) (p = 0.033). CONCLUSIONS: Part-time occlusion therapy converts the type of intermittent exotropia by reducing near deviation angle and is related to a better surgical success rate.
