Holladay 2 Formula
The Holladay 2 Formula is on the IOL Master and has not changed since it was first introduced. The IOL Master 500 has the latest version of the formula.
The Holladay IOL Consultant Program which has the Holladay 2 and many other features. It runs on a LAPTOP or Desktop computer and can IMPORT DIRECTLY from the IOL Master 500. Updates for the Program have always been available at www.hicsoap.com .