Cárdenas DT, Guerra AM, Cruz ID, Montero DE, Hernández SR

Language: Spanish
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ABSTRACT

Objective: to compare the keratometries estimated by Pentacan in hypermetropic eyes operated on with laser Excimer and those measured through the medical history method at "Ramón Pando Ferrer" Cuban Institute of Ophthalmology from March to June, 2011.
Methods: a study was performed in 50 eyes from 25 hypermetropic patients operated on by Lasik technique, where average keratometry was estimated by using the medical history method and then compared with the Pentacam-estimated keratometry values such as corneal apex value of the colour maps (total central keratometric value) and equivalent K-reading power as well as the the true net power (total keratometric value at 3.0 mm) and the equivalent keratometric readings of the Holladay Report program. The preoperative mean keratometry of the medical history was then estimated and compared with the preoperative keratometry estimated with Pentacam. The statistical analysis was performed by using the T Test for paired data, with 95% significance.
Results: among the keratometric values which did not show statistical differences when compared with those of the medical history method were the equivalent Kreading power and the equivalent keratometric readings at 3, 4 and 4.5 mm diameters, being that of 4.5 mm the most accurate.There were no differences among the preoperative keratometries.
Conclusion: Pentacam provides corneal power estimations that did not statistically differ from the ones obtained by the clinical history method in hypermetropic eyes which had previously undergone Excimer laser surgery.