Comparison of the results of the eye biometrics using different instruments

Abstract

Objective. Comparison of the measurements results of the eye parameters were conducted on the following instruments Lenstar LS900, IOLMaster, Pentacam HR and OPD-Scan II. Methods. The study involved 50 patients (54 eyes). For the purpose of calculating the optical power of the intraocular lens, biometry was performed on these instruments with statistical processing of the obtained data. Results. When measuring the anteroposterior axis and the depth of the anterior chamber of the eye, no clinically and statistically significant difference was obtained by all instruments. A statistically significant difference was found when comparing keratometry on the Lenstar LS900 biometer and Pentacam HR and OPD-Scan II keratotopographs. Conclusios. Between the main parameters of the eye, determined with the Lenstar LS900 and IOLMaster, there is a high dependence and repeatability of the results. The depth of the anterior chamber of the eye, measured with instruments of different types, in formulas for calculating the optical strength of intraocular lenses (Haigis, Holladay, Barret, Olsen) can be used to obtain new calculation algorithms. The keratometric data on Pentacam HR in the pupillary and 3 mm pupil zones and on OPD-Scan II in combination with the results obtained with the Lenstar LS900 and IOLMaster, because of significant differences, may be useful for identifying more accurate variants of intraocular lenses.