[Corneal morphometric predictive models from ametropia to excimer laser treatment].

Abstract

OBJECTIVE:

To develop corneal morphometric models with refractive error in excimer laser surgery.

METHOD:

A prospective-longitudinal study was conducted on 78 patients (151 eyes) using the LASIK surgical technique, and 56 patients (111 eyes) with myopic astigmatism using ESIRIS (Schwind-Germany) equipment with pendulous microkeratome. The results were analyzed using descriptive statistics. A NIDEK Confoscan microscope was used to obtain and study the images.

RESULTS:

After LASIK treatment 84.3% of the variations in epithelium thickness variations were due to the magnitude of refractive error and the epithelium thickness before LASIK treatment. More than two-thirds (68.8%) of the variations in keratocyte density variations in posterior flap and 48.2% of the variations in the anterior retroablation zone were due to the magnitude of the refractive error. Variations of 90% were found in the corneal thickness after LASEK, which were due to the magnitude of the refractive error before LASEK.

CONCLUSIONS:

Predictive models reveal that morphometrical variations depend of the magnitude of the refractive error. These models are very important in the selection of patient for refractive surgery, and also for the specific technique to use.

• Authors: E Rojas Alvarez, J González Sotero, T O Tamargo Barbeito
• Journal: Archivos de la Sociedad Espanola de Oftalmologia (Arch Soc Esp Oftalmol) Vol. 90 Issue 7 Pg. 312-23 (Jul 2015) ISSN: 1989-7286 [Electronic] Spain
• Vernacular Title: Modelos predictivos de morfometría corneal a partir de la ametropía a tratar con láser excímer.
• PMID: 25865651 (Publication Type: Journal Article)
• Copyright: Copyright © 2013 Sociedad Española de Oftalmología. Published by Elsevier España, S.L.U. All rights reserved.

Topics

• Adult
• Astigmatism (diagnostic imaging, pathology, surgery)
• Cornea (diagnostic imaging, ultrastructure)
• Corneal Keratocytes (ultrastructure)
• Corneal Topography
• Humans
• Keratectomy, Subepithelial, Laser-Assisted
• Keratomileusis, Laser In Situ
• Linear Models
• Microscopy, Confocal
• Models, Biological
• Myopia (diagnostic imaging, pathology, surgery)
• Prospective Studies
• Stromal Cells (ultrastructure)