| Effect of Occlusion Therapy and Change of VEP in Amblyopia. |
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Kyung Hyun Jin, Hyung Woo Kwak, Sang Min Kim |
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Department of Ophthalmology, College of Medicine, Kyung Hee University, Seoul, Korea. |
| 약시에서의 차폐법 시행효과와 시각유발전위도의 변화 |
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진경현(Kyung Hyun Jin),곽형우(Hyung Woo Kwak),김상민(Sang Min Kim) |
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| Abstract |
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VEP(Visual Evoked Potential) is being widely used as a diagnostic method in amblyopia. In order to assess the visual improvement during occlusion therapy and VEP change between pre and post-occlusion therapy in amblyopia, 32 amblyopic chi1dren ranging from 3 to 13 years old were investigated. The results were as follows: 1. Among 21 cases of visual improvement above 2 lines with Han's visual acuity chart, occlusion therapy was effective in 73.7% of strabismic amblyopia, and 87.5% of anisometropic amblyopia. The mean period of visual improvement above 2 lines was 2.2 months. 2. As compared to non-amblyopic eye, VEP amplitude of amblyopic eye was significantly reduced. 3. There was no statistic significance of P3 latency between amblyopic and non-amblyopic eyes. 4. As compared to control group, the side difference of amblyopic group was significantly increased. 5. With visual improvement above 2 lines, increase of amplitude was revealed 87.5% and decrease of side difference was revealed 87.5% in 10 cases of investigating VEP change. 6. In 7 eyes of visual improvement above 2 lines, change of P2 latency between pre-occlusion and post-occlusion therapy revealed no significance statistically. |
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