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KMID : 1159320100120020103
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Korean Journal of Vision Science
2010 Volume.12 No. 2 p.103 ~ p.109
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The Correlation of Refractive Error and Accommodative Response
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Bae Hyun-Ju
Youn Mi-Ok
Kim Heung-Soo
Eom Jung-Hee
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Abstract
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Purposes: To investigate the correlation of refractive error and accommodative response.
Methods: The subject were 81 undergraduate students (26 emmetropes and 55 myopes, average age 21.05±1.87) who gave their consent to the objective of this study and did not have any ocular diseases, ocular diseases history and refractive surgery. We measured refractive error and accommodative response using Nvision-K 5001 Autorefractometer.
Results: All of the accommodative response measured by 0.2, 0.4 and 0.8 targets were significantly higher in the emmetropes than in the myopes. The accommodative response measured by 0.2 target(r = 0.30, p = 0.01) and 0.4 target(r = 0.23, p = 0.04) was decreased as myopia was increased and showed weak correlation with refractive error. The accommodative response measured by 0.2, 0.4 and 0.8 targets showed no significant difference in emmetropic group(F = 0.08, p = 0.93), early-onset myopic group(F = 1.35, p = 0.27) and late-onset myopic group(F = 2.51, r = 0.09).
Conclusion: The accommodative response was higher in the emmetropic group than in the myopic group, and accommodative response was increased as myopic error was lower. The accommodation response measured by 0.2 and 0.4 targets showed significant difference among the type of refractive error.
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KEYWORD
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Refractive error, Accommodation, Accommodative response, Myopia
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