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.
Full text
PDFSelected References
These references are in PubMed. This may not be the complete list of references from this article.
- Binkhorst R. D. Intraocular lens power calculation. Int Ophthalmol Clin. 1979 Winter;19(4):237–252. doi: 10.1097/00004397-197901940-00010. [DOI] [PubMed] [Google Scholar]
- Hillman J. S. Intraocular lens power calculation for planned ametropia: a clinical study. Br J Ophthalmol. 1983 Apr;67(4):255–258. doi: 10.1136/bjo.67.4.255. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hoffer K. J. Preoperative evaluation of the cataractous patient. Surv Ophthalmol. 1984 Jul-Aug;29(1):55–69. doi: 10.1016/0039-6257(84)90114-0. [DOI] [PubMed] [Google Scholar]
- Percival P. Lens power calculation--is it necessary? Trans Ophthalmol Soc U K. 1983;103(Pt 5):577–579. [PubMed] [Google Scholar]