# K-adjusted IOL Power Calculator ver 1.3

### by Youngsub Eom MD, PhD

The keratometry (K)-adjusted IOL power calculator version 1.3 provides predicted refraction and IOL power using the adjusted K according to the posterior/anterior corneal curvature radii ratio without changing the mean value of the entire dataset. Thus, original IOL constants derived from conventional K measurements can be used in this K-adjusted IOL power calculator.

In our study, the geometric mean posterior/anterior corneal curvature radii ratio was 0.808. From this result, the fictitious refractive index of the cornea for a single Scheimpflug camera was calculated as 1.3275. Thus, the default value of the fictitious refractive index of the corneal for a single Scheimpflug camera is 1.3275. However, a user can change this fictitiuos refractive index by using an individual fictitious refractive index derived from the user's own dataset, as IOL constants can be optimized for each surgeon.

Citation: Kim M, Eom Y, Lee H, Suh Y-W, Song JS, Kim HM. Use of the posterior/anterior corneal curvature radii ratio to improve the accuracy of intraocular lens power calculation: Eom's adjustment method. Invest Ophthalmol Vis Sci. 2018;59(2):1016-1024.

If you have any questions while using the K-adjusted IOL power calculator, please e-mail : __hippotate@hanmail.net__

Disclaimer : We cannot guarantee the accuracy or completeness of the results obtained using the IOL add power calculator, as it is user-dependent. Therefore the user is entirely responsible for their results and clinical outcomes.