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Box plots illustrating form factor, surface asymmetry index (SAI), and surface regularity index (SRI) measurement repeatability.
Notes: Group A, laser-assisted in situ keratomileusis (LASIK); Group B, keratoconus (KCN); Group C, Athens Protocol (AP); and Group D, control. Numerical indicators correspond to median values. (A) Comparative form factor repeatability in all groups; (B) comparative SAI repeatability in all groups; (C) comparative SRI repeatability in all groups.
