The IOL Calculator is meant to serve as an adjunct tool to assist physicians in selecting the appropriate IOL for a particular patient.

WebForm1 - ASCRS ... WebForm1

Please enter all data available and press "Calculate" ... Pre-LASIK/PRK Data: ... Post-LASIK/PRK Data: ... Optical/Ultrasound Biometric Data:

Please enter all data available and press "Calculate" ... Pre-LASIK/PRK Data: ... Post-LASIK/PRK Data: ... Optical/Ultrasound Biometric Data:

IOL power calculation formulas used: Double-K Holladay 1, Shammas-PL, & Haigis-L. With the Double-K Holladay 1 formula, the pre-LASIK/PRK corneal power is used to estimate the effective lens …

J Cataract Refractive Surg. 33:31-36. Haigis W (2008). Intraocular lens calculation after refractive surgery for myopia: Haigis-L formula. JCRS 34: 1658-1663. IOL power calculation formulas used: …

Pentacam - ASCRS provides a graphing tool for anterior segment surgeons, enhancing their clinical decision-making and surgical planning.

Barrett GD. An improved universal theoretical formula for intraocular lens power prediction. J Cataract Refract Surg, 19 (1993), 713–720