[Back-calculation of the keratometer index-Which value would have been correct in cataract surgery?]

CONCLUSION: The keratometer index derived from back-calculation matched with the Zeiss index (1.332) but was much lower compared to other established indexes, e.g. the Javal index (1.3375). The missing trend for axial length or corneal radius implies that simple vergence formulas for intraocular lens refractive power calculation without correction terms or fudge factors perform best with a keratometer index slightly below 1.332, if the biometrically measured position of the intraocular lens is used as the effective lens position. PMID: 32696196 [PubMed - as supplied by publisher]

https://www.ncbi.nlm.nih.gov/pubmed/32696196?dopt=Abstract

Source: Der Ophthalmologe - July 20, 2020 Category: Opthalmology Authors: Langenbucher A, Eberwein P, Fabian E, Szentmáry N, Weisensee J Tags: Ophthalmologe Source Type: research