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KMID : 1011420130180020137
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Journal of Korean Ophthalmic Optics Society
2013 Volume.18 No. 2 p.137 ~ p.142
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The Study on Effects of After Vision Training for Elementary School Children in Muan
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Jang Jung-Un
Kim In-Suk
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Abstract
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Purpose: This study was designed to investigate the current status of visual acuity for elementary school students in Muan-gun and to analyze improvements of their visual function after vision training for the elementary school students who have either insufficiency of accommodation or vergence. Methods: Subjective refraction, objective refraction and binocular function were examined for 335 elementary school children from year 1 to year 6 live in Muan area, and then 47 students who have symptoms of binocular dysfunction among them were selected. We analyzed and compared between before and after vision training (VT) in binocular vision function results. Results: The results show that most of the subjects had much problem in near point convergence (NPC) than accommodation. After the vision training, the average of subjects NPC was improved about 5.93 cm, from 11.57 ±1.850 cm for before VT to 5.66±0.965 cm for after VT. After VT positive fusional vergence at near distance after VT was 19.64±3.66 Δ, which was as much as double of near phoria. Accommodative amplitude was improved from 10.02±2.566 D for before VT to 12.30±1.397 D for after VT, which similar to mean of expected accommodative amplitude of 11.27 years old. Conclusions: Among insufficiency of accommodation and vergence NPC was improved specially, and accommodative facility and other ocular functions were also improved. Therefore, it is considered the vision training is very effective to recover from visual function problems.
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KEYWORD
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Refractive errors, Vision training, Binocular dysfunction, Visual acuity
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