Research of ablation of 193nm excimer laser on cornea

Lin Zhenneng; Shen Jianxin; Liao Wenhe

LASER TECHNOLOGY > 2003 > 27(6): 510-513.

Lin Zhenneng, Shen Jianxin, Liao Wenhe. Research of ablation of 193nm excimer laser on cornea[J]. LASER TECHNOLOGY, 2003, 27(6): 510-513.

Citation:

Lin Zhenneng, Shen Jianxin, Liao Wenhe. Research of ablation of 193nm excimer laser on cornea[J]. LASER TECHNOLOGY, 2003, 27(6): 510-513.

Citation:

Lin Zhenneng, Shen Jianxin, Liao Wenhe. Research of ablation of 193nm excimer laser on cornea[J]. LASER TECHNOLOGY, 2003, 27(6): 510-513.

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Research of ablation of 193nm excimer laser on cornea

Nanjing University of Aeronautics and Astronautics, Nanjing, 210016

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Received Date: March 11, 2003
Revised Date: June 25, 2003
Published Date: November 24, 2003

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Abstract

The mechanism of action of excimer laser (ArF:193nm 8ns) on cornea is very important in the ablation refractive surgeries such as laser in situ keratomileusis(LASIK)and photorefractive keratectomy(PRK).In this paper,we analyze photoablation model and photophysical model that describe the mechanism of action of excimer laser (ArF:193nm 8ns) on cornea,elicit the relationship between the energy density and the ablation depth.The factors that would influence the predictability and stability of the photorefractive surgery outcome are also investigated.Then the scanning algorithm can be optimized.The results have been directly applied to the ophthalmic excimer laser system and obtain satisfactory effect in diopter correction.
- excimer laser,
- cornea,
- photoablation,
- scanning algorithm

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