Comparative Analysis on Refractive Errors and High-Order Aberrations according to Changes in Pupil Size before and after Presbyopia

Abstract

Purpose : The purpose of this study was provide information that could be helpful in clinical practice for, presbyopia prescription as, classifying and analyzing refractive errors and highorder aberrations according to changes in pupil size into age groups before and after presbyopia. Methods : Refractive errors and high-order aberrations were measured between 20~80 years of age adults males and females who had no eyes disease and refractive surgery, and they were divided into two groups such as, 20~40 years and 45~80 years. A paired-T test was used to compare refractive errors and high-order aberrations according to the changes in pupil size, and correlation analysis according to age was conducted by Pearson correlation. Results : The spherical equivalent power of 20~40 years was –3.193±2.494 D at 3 mm of pupil size, and the spherical equivalent power at 5 mm was –3.386±2.451 D, showing that myopia of 0.193 D increased. The spherical equivalent power of 45~80 years was 0.015±1.340 D at 3 mm of pupil size, and the spherical equivalent power at 5 mm was –0.054±1.566 D, showing that myopia of 0.069 D increased. In addition, at a pupil size of 3 mm, coma aberration of 0.026 μm, spherical aberration of 0.016 μm, trefoil aberration of 0.037 μm, astigmatism of 0.012 μm, and quatrefoil aberration of 0.022 μm was increased in 45~80 years more than those 20~40 years. Conclusion : When prescribing progressive lenses for presbyopia correction, it is considered to be prescribed with reference to pupil size or high-order aberrations that can degrade vision.