| The Changes of Exodeviation according to Distance and after Patching of Deviated Eye for 1 Hour in Intermittent Exotropia. |
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Yong Gi Jung, Seung Hyun Kim, Yoonae A Cho |
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Department of Ophthalmology, College of Medicine, Korea University, Seoul, Korea. earth317@yahoo.co.kr |
| 간헐외사시에서 원거리 정도와 한시간 사시안 가림에 따른 사시각의 변화 |
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정용기 ( Yong Gi Jung ) , 김승현 ( Seung Hyun Kim ) , 조윤애 ( Yoon Aa Cho ) |
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| Abstract |
PURPOSE
To determine the change of exoangle according to the measure distance and 1-hour occlusion of exotropic eye in intermittent exotropia. METHODS: We prospectively reviewed the records of 60 patients diagnosed with intermittent exotropia. The exoangle was measured at 6 m, 14 m, outdoor 30 m and at 6 m after occlusion of exotropic eye for 1 hour. Refractive error, stereoacuity and suppression were investigated in all subjects. RESULTS: The mean amount of exoangle was 28.2 +/- 5.64 PD at 6 m, 29.7 +/- 6.54 PD at 14 m and 30.3 +/- 2.84 PD at outdoor 30 m. The amounts of exoangle at 14 m and at outdoor 30 m were significantly increased compared with that at 6 m (p=0.009 and p=0.005, respectively). However, there was no significant difference between that at 14 m and at 30 m (p=0.08). The mean amount of exoangle after occlusion of exotropic eye for 1 hour was 29.3 +/- 5.48 PD, which was not statistically different from that at 14 m (p=0.44) and at 30 m (p=0.19). In 31 patients (51.7%) who had an increase of exoangle more than 3 PD at 14 m and 30 m compared to that at 6 m, mean exoangle at 6 m was 31.4 +/- 5.30 PD. In 29 patients (48.3%) who had an increase of exoangle less than 3PD, mean exoangle at 6 m was 26.2 +/- 5.72 PD. Increase of exoangle was prominent in patients with exoangle more than 30 PD at 6 m. There was no correlation in the amount of exoangle according to refractive error, stereoacuity and the presence of suppression (p=0.17, p=0.47, p=1.0, respectively). CONCLUSIONS: The exoangle increased at distances longer than 6 m and after 1-hour occlusion of exotropic eye in intermittent exotropia. The increment of exoangle according to distance was prominent in patients with exoangle more than 30 PD at 6 m. |
| Key Words:
Change of exoangle;Intermittent exotropia;Measure distance;One-hour occlusion of exotropic eye |
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