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KMID : 1159320230250040331
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Korean Journal of Vision Science
2023 Volume.25 No. 4 p.331 ~ p.337
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The Impact of Higher-order Aberrations on Contrast Visual Acuity in Young Adults
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Jang Hyo-Seung
Song Yun-Young
Jung Mi-A
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Abstract
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Purpose : The objective of this study was to investigate the influence of higher-order aberrations on contrast visual acuity among young adults.
Methods : A total of 29 young adults in their 20s were recruited for this study. Contrast visual acuity and higher-order aberrations were measured. Based on the results of contrast visual acuity, a comparison was made between the higher-order aberrations at 100% and 10% contrast levels.
Results : The average refractive error correction among the participants was ?3.21±1.57 D.
The measured values for higher-order aberrations, including defocus, oblique trefoil, vertical coma, horizontal coma, horizontal trefoil, oblique quadrafoil, spherical aberration, and horizontal quadrafoil were ?0.326±0.730, -0.026±0.038, 0.042±0047, 0.023±0.048, 0.003±0.038, 0.000±0.022, 0.073±0.027, and 0008±0020 μm. The average high-contrast visual acuity and low-contrast visual acuity among the participants were 1.114±0.304 and 0.686±0.239 logMAR respectively. The analysis of the relationship between higher-order aberrations and contrast visual acuity revealed no significant correlation at high contrast (100%). However, at low contrast (10%), significant correlations were found between oblique trefoil and spherical aberration (p=0.009, p=0.039).
Conclusion : Higher-order aberrations have an impact on contrast visual acuity in young adults. Correcting these higher-order aberrations may improve visual quality.
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KEYWORD
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High-contrast visual acuity, High-order aberration, Low-contrast visual acuity
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