Abstract

CARDENAS DIAZ, Taimi et al. Keratometries with use of Pentacam and of the medical history method in hypermetropic patients with previous refractive surgery. Rev Cubana Oftalmol [online]. 2013, vol.26, n.1, pp.111-120. ISSN 0864-2176.

Objective: to compare keratometries measured by Pentacam in operated hypermetropic eyes with Excimer Laser and that of the medical history method. Methods: aprospective study conducted in 50 hypermetropic eyes of 25 patients operated on by LASIK at "Ramón Pando Ferrer" Cuban Institute of Ophthalmology from March to June of 2011. The average keratometry through the medical history method was estimated and compared with the keratometry values provided by Pentacam : value of the corneal apex of color maps, True Net Power (total central keratometric value) and Equivalent K-reading Power(equivalent keratometric reading) as well as the total keratometric value of 3.0 mm and the equivalent readings of Holladay Report program. The mean preoperative keratometry of the medical history was estimated and then compared with the preoperative keratometry measured by Pentacam. The statistical analysis was based on paired t test, using 95 % significance level. Results: the values that did not show significant statistical differences in comparison with that of the clinical history method were the Equivalent K-reading Power (equivalent keratometric readings), the total keratometric value and the equivalent keratometric readings of 3.4 and 4.5 diameters, being 4.5 mm the most exact. No differences were seen in the preoperative keratometries. Conclusion: Pentacam provides corneal powers that did not differ statistically from those of the clinical history method in hypermetropic eyes having previous surgery with Excimer laser.

Keywords : keratometry; refractive surgery; Excimer laser; hypermetropia.

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