Eye Pro:

Thick & Thin Lens Equation



Thick Lens Equation (GOF)

  1. Starting from Ant r, Post r and Central Corneal Thickness (CCT), this program calculates the Total corneal power (CP), Anterior Surface CP, Posterior Surface CP, Ant/Post r ratio, SimK equivalent (calculated from the Ant r using 1.3375 as the Keratometric Index), K2 value (as described in the literature).

Thin Lens Equation

This program has two functions:

  1. It calculates CP from Ant r using 1.3375 as the Keratometric Index.

  2. It calculates the Keratometric Index of your device from Ant r and CP.

Calculations with Custom Keratometric Index

  1. This program is to be used if you have a custom Keratometric Index (e.g. 1.3315 from Manual Keratometry which is now rarely used) that you would like to use to convert from Ant r to CP or viceversa. Data required from the device of your choice: Keratometric Index, Ant r or CP.


These 3 program are only available as part of “Eye Pro 2013”. Click on the icon on your right to visit the App Store for more info (iTunes will be automatically opened).

Back to Functions Menu.

Click on the icon to visit the Application page on iTunes.

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