Title :
A model to calculate corneal ablation profile based on toric corneal surface
Author :
Han, Ye ; Xiang-Jie, Yang ; Guang-Bin, Yi
Author_Institution :
Sch. of Mechatron. Eng., NanChang Univ., Nanchang, China
Abstract :
We modeled the corneal surface as a torus before surgery and modeled the corneal surface as a sphere after surgery to determine the ablation profile in refractive surgery. The two different-radii of curvature of the torus along its orthogonal meridians are determined by the deepest and flattest section of the corneal measure by topographic observation. The results show the model is effective to correct myopia, hyperopia and astigmatism with the rule in the ophthalmic excimer laser system.
Keywords :
eye; surface topography; surgery; corneal ablation profile; ophthalmic excimer laser system; orthogonal meridian; refractive surgery; sphere; topographic observation; toric corneal surface; torus; Biomedical engineering; Biomedical measurements; Cornea; Humans; Power system modeling; Shape; Size control; Surface topography; Surgery; Vision defects; LASIK; ablation profile; cornea model; toric corneal surface;
Conference_Titel :
BioMedical Information Engineering, 2009. FBIE 2009. International Conference on Future
Conference_Location :
Sanya
Print_ISBN :
978-1-4244-4690-2
Electronic_ISBN :
978-1-4244-4692-6
DOI :
10.1109/FBIE.2009.5405869
