Purchase this article with an account.
S. Romano-Bucay, A. Babayan-Sosa, R. Velasco-Ramos, O. Baca-Lozada, G. Villanueva; Intraocular Lens Calculation in Patients with Keratoconus Using Iolmaster®. Invest. Ophthalmol. Vis. Sci. 2010;51(13):4966.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
To compare formulas with the IOLMaster® in patients with keratoconus.
We included patients with keratoconus who were tested with the IOLMaster® for Intraocular lens (IOL) calculation from April to October 2009 that accepted to participate in the study. We included patients who were 18 years and older with a keratoconus at any clinical stage. The following formulas were compared : SRK II, SRK T, Hoffer Q and Haigis. Students T test, ANOVA and correlation analysis were obtained.
Ninety eight eyes from 51 patients were included, 20 male and 31 female, with a mean Axial length (AL) of 24.48mm ± 1.91mm. The predominant keratoconus stages were I and II, most of them with a paracentral presentation. SRK/T and Haigis have a correlation with statistical significance (r = 0.99), but SRK T maintains more stability when used with stages III and IV.
IOLMaster is effective in determining IOLs in patients with early stages of kertatoconus. Patients with stages I y II have less variation for the calculation. Patients with paracentral keratoconus have fewer problems during testing and benefit from the use of empiric formulas from later generations. Patients with central stages III or IV keratoconus have less variation using SRK II formula.
This PDF is available to Subscribers Only