고위수차와 난시도의 상관관계

Purpose: We aimed to investigate the correlations between the astigmatic axis and higher-order aberrations (HOAs) and between astigmatic degrees and HOAs within a specific range of myopic degrees. Methods: The HOAs of 992 eyes were analyzed with a LADARWave device using a Hartmann-Shack system. The astigmatic degree and axis were determined through a manifest refraction test. Results: The differences in most vertical aberrations between nonastigmatic and against-the-rule (ATR) astigmatic eyes were greater than those between non-astigmatic and with-the-rule (WTR) or oblique astigmatic eyes. The largest differences between non-astigmatic and WTR astigmatic eyes were observed in vertical second-order astigmatism and vertical quadrafoil aberrations. By contrast, the most pronounced differences between non-astigmatic and oblique astigmatic eyes were found in coma and oblique trefoil aberrations.
When the correlation between astigmatic degree and HOAs was evaluated, WTR astigmatic eyes showed significant relationships with vertical coma, vertical trefoil, vertical second-order astigmatic, and vertical quadrafoil aberrations.
Similarly, oblique astigmatic eyes exhibited significant correlations with vertical trefoil, oblique trefoil, and vertical second-order astigmatism aberrations. Conversely, no significant correlations were observed between astigmatic degree and HOAs. Vertical coma aberration increased significantly with higher WTR astigmatic degrees in eyes with myopic degrees of −3.00D or less and −3.00 D ≤ −6.00. Conclusions: HOAs varied based on the astigmatic axis, whereas the correlation between astigmatic degree and HOAs was influenced by the astigmatic axis and myopic degree.