IOL Calculator for Eyes with Prior Myopic LASIK/PRK
(Your data will not be saved.  Please print a copy for your record.)
Please enter all data available and press "Calculate"
Doctor Name Patient Name Eye IOL Model Target Ref (D)
Pre-LASIK/PRK  Data:
Refraction* Sph(D) Cyl(D)* Vertex (If empty, 12.5 mm will be used)
Keratometry K1(D) K2(D)
Post-LASIK/PRK Data:    
Refraction*§ Sph(D) Cyl(D)* Vertex(mm)
Topography EyeSys EffRP Atlas 9000 
4mm zone
Tomey ACCP

Pentacam TNP_Apex_Zone 40
Atlas Ring Values 0mm 1mm 2mm 3mm
OCT (RTVue or RTVue-XR) Net Corneal Power Posterior Corneal Power Central Corneal Thickness
Optical (IOLMaster/Lenstar)/Ultrasound Biometric Data:
Ks K1(D) K2(D) Keratometric
Index (n)***
AL(mm) ACD(mm) Lens Thick (mm) WTW (mm)
Lens Constants****  A-const(SRK/T) SF(Holladay1)
Haigis a0 Haigis a1 Haigis a2
*If entering "Sph(D)", you must enter a value for "Cyl(D)", even if it is zero. 
§Most recent stable refraction prior to development of a cataract.
# Magellan ACP or OPD-Scan III APP 3-mm manual value (personal communication Stephen D. Klyce, PhD).
**Select the version of your Galilei device:  "V5.2 or earlier" or "V5.2.1 or later". 
***Select the keratometric index (n) of your device.  Instruments in North America typically default to 1.3375.
****Enter any constants available;
others will be calculated from those entered. If ultrasonic AL is entered, be sure to use your ultrasound lens constants.