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KMID : 1159320210230040383
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Korean Journal of Vision Science
2021 Volume.23 No. 4 p.383 ~ p.394
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The Amount of Change in Monocular Accommodative Response and Accommodative Lag with Increasing Age
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Kim Sung-Jin
Kim Ki-Hong
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Abstract
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Purpose : This study is to verify the relationship between the amount of change of the influence of accommodative response and the accommodative lag in spectacle refraction with increasing age.
Methods : In order to research into the accommodative response point that corresponding to the stimulus on the far and near point (ARf, ARn) with increasing age, the refractive examination was performed on 74 monocular subjects with emmetropia (males: 37, females: 37) using streak retionscopy. The accommodative response value was obtained with the retinoscope that a 0.4 MEM Snellen single E card (BC11981 bernell) was attached to the front of the retinoscope head (No 18235, WelchAllyn, USA).
Results : In the case of ARf with increasing age, it showed significant results of Ⅰ〉Ⅱ, Ⅲ, Ⅳ, and the remaining ARn and accommodative lag showed significant results of Ⅰ, Ⅱ, Ⅲ〈Ⅳ.
The statistical moderation effects between ARf and accommodative lag with increasing age showed significant results of Ⅰ·Ⅱ〉Ⅰ·Ⅲ〉Ⅰ·Ⅳ.
Conclusion : The criteria point of accommodative response in the orbit for distant spectacle refraction test should be applied differently as the absolute value of ARf on the ocular axis and accommodative lag with increasing age after 40 years is decreased and increased, respectively.
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KEYWORD
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Accommodative lag, Accommodative response, Accommodative response amplitude, Presbyopia
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