Quantitative confocal microscopy of corneal haze and correlation with the ametropy to be treated, in surface refractive surgery

Abstract:

Objective: To describe variations of corneal morphometric haze, in surface Excimer Laser treatment, and its relationship with the ametropy magnitude. Method: A prospective, longitudinal observational and descriptive research was carried out in 56 patients (111 eyes) who underwent of myopic astigmatism LASEK surgical technique, with Mitomycin. We used the confocal microscope NIDEK 4 Confoscan for the collection and analysis of the images. Data were processed through the program SPSS 21.0, ANOVA for repeated measurements for a factor with the confidence interval adjustment by Bonferroni, Pearson correlation and linear regression model. Results: Significant direct correlation between the thickness of the corneal haze and the magnitude of the ametropy was obtained. Higher value of this variable, it is the thickness of the retrieved corneal haze, and there is more correlation to the three months of operation. The value of R2 retrieved is not optimal. Only 39% of the corneal haze variations are dependent on the magnitude of the treated ametropy. Conclusions: The corneal haze thickness obtained in patients who underwent surgery with Excimer Laser through the LASEK technique, is dependent on the magnitude of the ametropy, and acquires its greatest value at 3 months postoperative. The magnitude of the ametropy is not the only factor influencing haze thickness. In transparent corneas in the postoperative of LASEK, always there is some degree of morphometric corneal haze.

Año de publicación:

2016

Keywords:

• CÓRNEA
• morphometry
• Correlation
• Refractive surgery
• haze
• Ametropy

Fuente:

scopus