Testing a model for excimer laser-ablation rates on corneal shape after refractive surgery.
We have tested whether a recent model [Appl. Phys. Lett.95, 174105 (2009)APPLAB0003-695110.1063/1.3254236] that considers the angular dependence of laser-ablation rates, including reflection losses and geometrical dependence of incident fluence, and the effect of plume absorption can have significant effects for refractive surgery patients. We have developed a mathematical procedure and deduced equations that show that this model can significantly influence postsurgical corneal parameters (radius and asphericity) and, thus, should be considered in ablation algorithms in order to achieve a better emmetropization and an effective correction of eye aberrations.
Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, Granada 18071, Spain. jrjimene@ugr.es
José R
JR
Jiménez
José J
JJ
Castro
Carolina
C
Ortiz
Rosario G
RG
Anera
D003198:Computer Simulation; D003315:Cornea / Q000033:anatomy & histology / Q000502:physiology* / Q000601:surgery*; D006801:Humans; D054018:Lasers, Excimer / Q000627:therapeutic use*; D008954:Models, Biological; D054140:Refractive Surgical Procedures / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*