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KMID : 1159320220240040381
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Korean Journal of Vision Science
2022 Volume.24 No. 4 p.381 ~ p.389
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The Effect of Corneal Refractive Power on Refractive Errors and Pupil Diameter
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Lim Dong-Kyu
Kim Dae-Yeong
Lee Koon-Ja
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Abstract
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Purpose : To investigate the effect of corneal refractive power on refractive errors and pupil diameter in their 20s∼70s.
Methods : Myopic (831 eyes, 34.55±13.17 years, -2.28±1.37 D) and hyperopic (369 eyes, 47.20±12.24 years, +1.22±0.72 D) subjects without any eye disease and refractive surgery were participated in this study. I-Profilerplus was used to measure corneal refractive power and pupil diameter and refractive errors in the eyes.
Results : The corneal refractive power was significantly greater in the myopia group by about 0.35 D than in the hyperopia group, and and as the corneal refractive power increased, the refractive errors increased in the minus (-) direction (r=-0.182, p=0.023). The pupil diameter was significantly greater in the myopia group by about 0.40 mm than that of hyperopia group, and the refractive errors showed a weak correlation with the pupil size in the negative (-) direction (p<0.050). And as the corneal refractive power increased in the positive (+) direction, the pupil diameter significantly increased (p<0.050).
Conclusion : The corneal refractive power affects refractive errors and pupil diameter measurements. The results of this study could be a cornerstone for understanding the pupil diameter and refractive error.
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KEYWORD
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Corneal refractive power, Hyperopia, Myopia, Pupil diameter, Refractive errors
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