Rojas-Diaz J, Baca-Lozada O, Velasco-Ramos R, Viggiano AD

Language: Spanish
References: 8
Page: 318-321
PDF size: 34.49 Kb.

ABSTRACT

Purpose: Establish the intraocular pressure (IOP) behavior after laser in situ keratomileusis (Lasik); learn if a relationship between the amount of corneal ablation and IOP after Lasik exist and determine if flap’s thickness has any effect in IOP after Lasik. Methods: A prospective, longitudinal, observational and descriptive study, between March and November 2002. We studied 91 eyes from 46 patients. Preoperatory IOP and pachymetry were measured in all patients, and were treated with Lasik conventional technique. Postoperatory IOP and pachymetry were measured in all patients. Patients were divided in three groups according to corneal ablation: 1) ‹50 microns; 2) 51-75 microns and 3) ›76 microns. According to the flap thickness we divided two groups: a) 180 microns and b) 160 microns. Statistical analysis was done by Paired Student’s t test. Results: In all groups we found a decreased IOP (P‹0.05). When we compared all groups we did not found a statistically significant reduction in IOP after Lasik. Conclusion: IOP underestimation after Lasik does exist, which does not depend on the amount of corneal ablation. The flap’s thickness does not have an effect in the IOP underestimation.

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