Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1986 Feb;70(2):152-4.
doi: 10.1136/bjo.70.2.152.

On the calculation of power from curvature of the cornea

On the calculation of power from curvature of the cornea

T Olsen. Br J Ophthalmol. 1986 Feb.

Abstract

The theoretical basis for the calculation of corneal refractive power from anterior curvature is considered. It is shown that the power can be calculated with sufficient accuracy from one simple formula provided the refractive index of the 'cornea' is 1.3315. It is suggested that keratometer readings should be calibrated with this value in order to increase the accuracy in intraocular lens calculation.

PubMed Disclaimer

References

    1. Int Ophthalmol Clin. 1979 Winter;19(4):237-52 - PubMed
    1. Surv Ophthalmol. 1984 Jul-Aug;29(1):55-69 - PubMed
    1. Trans Ophthalmol Soc U K. 1983;103 ( Pt 5):577-9 - PubMed
    1. Br J Ophthalmol. 1983 Apr;67(4):255-8 - PubMed

LinkOut - more resources