Phaco-ablation using TE-CO2 laser

Lalit Mohan Kukreja M.D.

doi:10.1117/12.34936

1 September 1990 Phaco-ablation using TE-CO₂ laser

Lalit Mohan Kukreja M.D.

Proceedings Volume 1353, First International Conference on Lasers and Medicine; (1990) https://doi.org/10.1117/12.34936
Event: First International Conference on Lasers and Medicine, 1990, Tashkent, Uzbekistan

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.

Citation Download Citation

Lalit Mohan Kukreja M.D. "Phaco-ablation using TE-CO₂ laser", Proc. SPIE 1353, First International Conference on Lasers and Medicine, (1 September 1990); https://doi.org/10.1117/12.34936

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