Abstract
Purpose: To calculate and compare the point-spread function (PSF) and the central ablation depth (CAD) of a paraxial eye model after photo-refractive keratectomy (PRK), with single and multizone treatments. Method: A modified Le Grand-El Hage paraxial eye model, with a pupil diameter ranging from 2 to 8 mm was used. Ray-tracing was performed for initial myopia ranging from 1 to 10D; after single zone PRK; after double zone PRK; and after tripe zone PRK. The ray-tracing of a parallel incident beam was calculated by using the paraxial matrix method. Results: At equal CAD, the optical image quality is better after single zone treatments. Conclusion: Multizone treatments do not seem to be advantageous optically.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Pages | 164-170 |
| Number of pages | 7 |
| Volume | 2971 |
| DOIs | |
| State | Published - 1997 |
| Event | Ophthalmic Technologies VII - San Jose, CA, United States Duration: Feb 8 1997 → Feb 8 1997 |
Other
| Other | Ophthalmic Technologies VII |
|---|---|
| Country | United States |
| City | San Jose, CA |
| Period | 2/8/97 → 2/8/97 |
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Keywords
- Eye model
- Photo-refractive keratectomy
- Ray-tracing
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
González-Cirre, X., Manns, F., Rol, P. O., & Parel, J-M. A. (1997). Optical comparison of multizone and single zone photo-refractive keratectomy. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2971, pp. 164-170) https://doi.org/10.1117/12.275115