Corneal Asphericity and Higher-Order Aberrations after FS-LASIK and Trans-PRK for Myopia

Figure 4

Correlation between the change in Q value and spherical equivalent (SE), ablation depth (AD), and the ratio of AD and central corneal thickness (AD/CCT) after the FS-LASIK (a–c) and Trans-PRK (d–f) procedures.

(a)

(b)

(c)

(d)

(e)

(f)