Abstract
Laser photo thermo keratoplasty (LPTK) is a refractive procedure that changes the curvature of the cornea by laser induced collagen shrinkage. To understand the temperature distribution induced by the laser radiation inside the cornea, a photo-thermal theoretical model is employed to simulate this process. The 4-D space-time temperature distributions within the cornea are calculated and depicted. The effects of the incident fluence and the laser spot size on temperature relaxation rate is discussed. Optimization of incident fluence on the surface of the cornea is made. The comparison between calculated and experimental regions of collagen shrinkage is given. Recommendations for the design of clinical surgery instruments are also presented.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Place of Publication | Bellingham, WA, United States |
| Publisher | Publ by Int Soc for Optical Engineering |
| Pages | 61-71 |
| Number of pages | 11 |
| Volume | 1644 |
| ISBN (Print) | 0819407909 |
| State | Published - Dec 1 1992 |
| Event | Ophthalmic Technologies II - Los Angeles, CA, USA Duration: Jan 19 1992 → Jan 21 1992 |
Other
| Other | Ophthalmic Technologies II |
|---|---|
| City | Los Angeles, CA, USA |
| Period | 1/19/92 → 1/21/92 |
Fingerprint
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Thermal modeling of laser photothermo keratoplasty. / Zhou, Zhiping J.; Ren, Qiushi; Simon, Gabriel M D; Parel, Jean-Marie A.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1644 Bellingham, WA, United States : Publ by Int Soc for Optical Engineering, 1992. p. 61-71.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Thermal modeling of laser photothermo keratoplasty
AU - Zhou, Zhiping J.
AU - Ren, Qiushi
AU - Simon, Gabriel M D
AU - Parel, Jean-Marie A
PY - 1992/12/1
Y1 - 1992/12/1
N2 - Laser photo thermo keratoplasty (LPTK) is a refractive procedure that changes the curvature of the cornea by laser induced collagen shrinkage. To understand the temperature distribution induced by the laser radiation inside the cornea, a photo-thermal theoretical model is employed to simulate this process. The 4-D space-time temperature distributions within the cornea are calculated and depicted. The effects of the incident fluence and the laser spot size on temperature relaxation rate is discussed. Optimization of incident fluence on the surface of the cornea is made. The comparison between calculated and experimental regions of collagen shrinkage is given. Recommendations for the design of clinical surgery instruments are also presented.
AB - Laser photo thermo keratoplasty (LPTK) is a refractive procedure that changes the curvature of the cornea by laser induced collagen shrinkage. To understand the temperature distribution induced by the laser radiation inside the cornea, a photo-thermal theoretical model is employed to simulate this process. The 4-D space-time temperature distributions within the cornea are calculated and depicted. The effects of the incident fluence and the laser spot size on temperature relaxation rate is discussed. Optimization of incident fluence on the surface of the cornea is made. The comparison between calculated and experimental regions of collagen shrinkage is given. Recommendations for the design of clinical surgery instruments are also presented.
UR - http://www.scopus.com/inward/record.url?scp=0026967228&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026967228&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0026967228
SN - 0819407909
VL - 1644
SP - 61
EP - 71
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Publ by Int Soc for Optical Engineering
CY - Bellingham, WA, United States
ER -