LÁC NGOÀI PHÂN KỲ QUÁ MỨC: ĐẶC ĐIỂM LÂM SÀNG

Abstract

Purpose: Evaluation of clinical characteristics of intermittent exotropia of divergence excess type and outcomes of treatment. Methods: Cross-sectional descriptive study in 20 patients with divergence excess type intermittent exotropia seen at the National institute of Ophthalmology during September 2022 to July 2023. Results: Average age of clinical visit of intermittent exotropia of divergence type was 5,04±2,29 years, emmetropia is the most common type of refractive error, followed by mild myopia, amblyopia percentage is 17,5%. Average exodeviation at near and distance are 12,00±9,97PD and 29,75±6,42PD respectively, after monocular occlusion, near exodeviation increased significantly, distance exodeviation slightly increased, 20,75 ± 6,94PD và 34,50 ± 5,89PD respectively. Average amount of increased deviation after monocular occlusion is 8,75 ± 3,11PD at near and 4,75 ± 2,95 PD at distance. Stereoacuity is present in 85% patients. Conclusion: The majority of intermittent exotropia of divergence excess type may develop at any age with mostly emmetropia, mild myopia or mild hyperopia. There are significant changes in near exodeviation after monocular occlusion and no significant changes in distance exodeviation