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KMID : 1159320180200040523
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Korean Journal of Vision Science
2018 Volume.20 No. 4 p.523 ~ p.530
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A Study on the Measurement of Dynamic Visual Acuity according to the Change of Accommodative Stimulus
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Jin Moon-Seok
Jeon In-Chul
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Abstract
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Purpose : The purpose of this study was to investigate the difference in the dynamic visual acuity between (DVA) the distance and near and the effect of change of accommodative stimulus on the dynamic visual acuity by the addition of the plus lens.
Methods : The study involved 40 male and female adults (22.84 ± 2.43 years old) with over 1.0 of visual acuity and without systemic disease or ocular disease. We compared the distance and near DVA and the change of DVA induced by the addition of the plus lens(+0.50D, +1.00D, +1.50D).
Results : The distance DVA and near DVA are 78.86±19.46 deg/sec and 76.90±18.05 deg/sec respectively. The distance DVA was slightly higher(p=0.04). The higher the distance DVA, the higher the positive correlation with the near DVA and distance DVA, and distance DVA was higher in those who had higher the near DVA(r=0.95, p=0.00, Fig. 4). The near DVA according to the change of accommodative stimulus was 75.95±18.85 deg/sec in full correction and the near DVA with +0.50D spherical power was 76.95±16.45 but there was no statistically significant differences(p>0.05). However, the near DVA with +1.00D spherical power was 79.02±13.51 deg/sec and it was slightly higher. Also, the near DVA with +1.50D spherical power was 84.28±18.96 deg/sec, there and it was statistically significant difference(p<0.05).
Conclusion : There is no difference between distance and near DVA, but near DVA is also excellent if distance DVA is good. The DVA increases as added a plus lens for controlled accommodative stimulation changes.
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KEYWORD
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Dynamic visual acuity, Accommodative stimulus, Accommodation, e-sports, Near work
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