Residual Stromal Bed Calculator

Femto-LASIK · PRK / TransPRK · Lenticule extraction (CLEAR / SMILE / KLEx)
Planning & teaching tool

Approximate model. Ablation and lenticule depths are estimates for planning and teaching — not a substitute for individual surgical planning or nomogram-based treatment tables.

Parameters

µm
D
D
mm
µm
µm
µm
µm
i
Enter values to calculatePachymetry, sphere and cylinder are required.

Results

Residual stromal bed
Treatment amount
D
Ablation depth
µm
Flap thickness
µm
Tissue removed
%
PTA
%

Corneal cross-section

Model: 14 µm/D (Femto-LASIK & PRK), 16 µm/D (lenticule) at 6.5 mm optical zone · Munnerlyn scaling ∝ (zone/6.5)² · treatment = |sphere| + |cylinder| Refractive Planning Suite · Dr. med. Harald C. Gäckle