Refractive Candidacy — 3D

Genuine 3D corneal cross-section: tissue-budget geometry (flap · ablation crater · residual stromal bed) driving the same PTA / Randleman math as the 2D screener.

Ablation Depth

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Residual Bed (RSB)

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Tissue Altered (PTA)

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Randleman Score

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Central Corneal Thickness540 µm

Manifest Refraction (SE)−4.5 D

Corneal Curvature (Kmax)43.0 D

Stroma / corneal shell

Femtosecond flap plane

Excimer ablation crater

Inferior ectasia bulge

Randleman risk gauge