Cárdenas DT, Guerra AM, Pérez CEC, Cuan AY, Hernández LI

Language: Spanish
References: 0
Page: 1-11
PDF size: 93.21 Kb.

ABSTRACT

Objective: to compare the intraocular lens power calculated through effective keratometric readings taken at three and four milimeters away from Pentacam with the values obtained by means of the medical history method and the Maloney´s method in myopic patients with prior photoablative surgery.
Methods: case series and descriptive study conducted in 50 eyes from 25 myopic patients operated on with excimer laser, in which keratometry was determined through the medical history method and Maloney´s method and then compared with the effective keratometric readings taken three and four milimeters away from Pentacam. The keratometries obtained through the three above-mentioned methods allowed calculating the intraocular lens power, based on Hagis formula. The statistical analysis was based on paired-T test with 95 % significance level.
Results: average preoperative refractive error was -4.71 ± 1.27 diopters. The effective keratometric value calculated by the medical history method was 39.64 ± 2.13 diopters; by Maloney´s method was 39.39 ± 2.40 and by the effective keratometric readings at three and four mm were 39.45 ± 2.28 y 39.40 ± 2.08 diopters, respectively. The intraocular lens calculated with the medical history method keratometry, the Maloney´s method keratomery and with the effective keratometric readings was 21.91 ± 2.86 diopters; 22.24 ± 3.14 diopters; 22.16 ± 3.16 diopters and 22.23 ± 3.08 diopters, respectively, with no significant statistical difference (p> 0.05).
Conclusions: Pentacam along with Holladay Report provide corneal powers that may be used in calculating intraocular lens power in myopic patients after photoablative surgery.