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KMID : 1159320200220010075
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Korean Journal of Vision Science
2020 Volume.22 No. 1 p.75 ~ p.81
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Comparative Analysis on Accommodative Response Based on Degree of Anisopia
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Do Jong-Hwan
Jo Jae-Won
Jung Yee-Rin
Park Hyung-Min
Chu Byoung-Sun
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Abstract
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Purpose : This study aimed to compare each accommodative response based on degree of anisopia.
Methods : This study was performed with 10 adult males and females(21.60±0.50 years old) under the criteria; 1) no subject had ophthalmic surgery or disease, 2) all subjects were within normal vision range and had no need to correct, and 3) all subjects had same visual functions. The contact lenses with +1.00, +1.50, and +2.00 D were monocularly worn on non-dominant eye one after the other. The accommodative responses were measured by a binocular open-field autorefractometer under the accommodative stimulus of 100, 40, and 20 cm that enabled dynamic measurement.
Results : As a viewing distance became shorter the accommodative response increased inboth dom inant and non-dominant eyes. For non-dominant eyes the accommodative response has decreased as the degree of myopia has become greater in comparison with the naked eyes, while for dominant eyes the accommodative response increased(p<0.050). When the anisopia degree and the accommodative stimulus were greater the accommodative response seemed to be bigger(p<0.050).
Conclusion : The results of this study revealed that a precise examination on accommodative response level of both eyes is required when prescribing addition for anisopia. Therefore, it is thought that the difference of accommodative responses between left and right eyes should be considered to minimize the accommodative asthenopia caused by close-range works for prescribing reading glasses.
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KEYWORD
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Accommodative response, Accommodative stimulus, Aniseikonia, Anisopia
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