14 August 1992 Thermal modeling of laser photothermo keratoplasty
Author Affiliations +
Proceedings Volume 1644, Ophthalmic Technologies II; (1992) https://doi.org/10.1117/12.137405
Event: OE/LASE '92, 1992, Los Angeles, CA, United States
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhiping James Zhou, Qiushi Ren, Gabriel Simon, and Jean-Marie A. Parel "Thermal modeling of laser photothermo keratoplasty", Proc. SPIE 1644, Ophthalmic Technologies II, (14 August 1992); doi: 10.1117/12.137405; https://doi.org/10.1117/12.137405


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