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Proceedings Paper

Phaco-ablation using TE-CO2 laser
Author(s): Lalit Mohan Kukreja
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Paper Abstract

To explore the possibility of extracting cataracts percutaneously we have carried out in-vitro studies on ablation of cataractous human eye lenses using a TE-C02 laser of pulse duration 135 nsec FWHM. The threshold flue2ce of ablation is found to be about 5 J/cm and the ablation yield about 0. 5 mg/Jcm which slowly tends to decrease with the laser fluence. Temporal evolution of the ablation shows a sharp spike of about 1 psec FWHM followed by a long ejection pulse of about 30 jjsec FWHM. Compared to the commonly used XeCl excimer laser for phaco-ablation a TE-C02 laser results in a more efficient ablation on an energy basis and does not invol ye the risk of carcinogenesis or cataracts. Thermal damage in the remainder tissue can be comparable at shorter pulse durations of the TE-C02 laser to that of the XeCl excimer laser. 1.

Paper Details

Date Published: 1 September 1990
PDF: 5 pages
Proc. SPIE 1353, First International Conference on Lasers and Medicine, (1 September 1990); doi: 10.1117/12.34936
Show Author Affiliations
Lalit Mohan Kukreja, Bhabha Atomic Research Center (India)


Published in SPIE Proceedings Vol. 1353:
First International Conference on Lasers and Medicine

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