Model for photorefractive keratectomy with a scanning beam

Fabrice Manns; Jin-Hui Shen; Per G. Soederberg; Takaaki Matsui; Jean-Marie A. Parel

doi:10.1117/12.199254

12 January 1995 Model for photorefractive keratectomy with a scanning beam

Fabrice Manns, Jin-Hui Shen, Per G. Soederberg, Takaaki Matsui, Jean-Marie A. Parel

Proceedings Volume 2330, Lasers in Ophthalmology II; (1995) https://doi.org/10.1117/12.199254
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

The optimal values of the parameters of a scanning system for laser corneal surgery are determined by using a computer model. The correction of myopia is simulated. The accuracy of the correction, the smoothness of the corneal surface after ablation, and the time needed for surgery are computed. With a beam diameter of 0.5 mm, an overlap of 60% to 80%, and a 5 mm diameter treatment zone, the simulated error is less than 0.1 Diopter for a correction of 6 Diopters or less; the roughness is less than 7% of the central ablation depth; the number of pulses per Diopter of correction is 2500 if the beam intensity distribution is Gaussian and 580 if the beam intensity distribution is uniform.

Citation Download Citation

Fabrice Manns, Jin-Hui Shen, Per G. Soederberg, Takaaki Matsui, and Jean-Marie A. Parel "Model for photorefractive keratectomy with a scanning beam", Proc. SPIE 2330, Lasers in Ophthalmology II, (12 January 1995); https://doi.org/10.1117/12.199254

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available