Input parameters
Clinical Presets & Examples
Vertical Coma
Z(3,-1) = -0.5 µm
HOA
Trefoil
Z(3,3) = 0.5 µm
HOA
Spherical (−)
Z(4,0) = -0.5 µm
4th order
Spherical (+)
Z(4,0) = +0.5 µm
4th order
2nd Astigmatism
Z(4,2) = 0.5 µm
4th order
2nd Coma
Z(5,-1) = 0.5 µm
5th order
2nd Spherical (−)
Z(6,0) = -0.4 µm
6th order
2nd Spherical (+)
Z(6,0) = +0.4 µm
6th order
Post-LASIK Myopic
Typical aberration profile
Refractive
Post-LASIK Hyperopic
Central steepening pattern
Refractive
Post-PresbyLASIK
Multifocal profile
Presbyopia
Decentered Ablation
Post-LASIK decentration
Complication
Early Keratoconus
Forme fruste KC
Ectasia
Advanced Keratoconus
Significant HOAs
Ectasia
Pellucid Degeneration
Against-the-rule pattern
Ectasia
Note:
Zernike coefficients (µm) 28 modes up to 6th order
■ Color scheme by radial order (n):
n=0 Piston
n=1 Tilts
n=2 Focus/Astig
n=3 Coma/Trefoil
n=4 Spherical
n=5 High-order
n=6 High-order
Disclaimer
Educational/research tool. Results do not replace clinical judgment and must be checked against instrument measurements.
Computing (GM decomposition, radial derivatives)…