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
Optical comparison of multizone and single zone photo-refractive keratectomy. / González-Cirre, Xóchitl; Manns, Fabrice; Rol, Pascal O.; Parel, Jean-Marie A.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2971 1997. p. 164-170.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Optical comparison of multizone and single zone photo-refractive keratectomy
AU - González-Cirre, Xóchitl
AU - Manns, Fabrice
AU - Rol, Pascal O.
AU - Parel, Jean-Marie A
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
KW - Eye model
KW - Photo-refractive keratectomy
KW - Ray-tracing
UR - http://www.scopus.com/inward/record.url?scp=58049200239&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58049200239&partnerID=8YFLogxK
U2 - 10.1117/12.275115
DO - 10.1117/12.275115
M3 - Conference contribution
AN - SCOPUS:58049200239
VL - 2971
SP - 164
EP - 170
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -