Femtosecond refractive eye surgery: study of laser parameters for even more efficiency and safety

Ronan Le Harzic; Christian Wüllner; D. Bruneel; Christof Donitzky; Karsten König

doi:10.1117/12.728098

13 July 2007 Femtosecond refractive eye surgery: study of laser parameters for even more efficiency and safety

Ronan Le Harzic, Christian Wüllner, D. Bruneel, Christof Donitzky, Karsten König

Proceedings Volume 6632, Therapeutic Laser Applications and Laser-Tissue Interactions III; 663217 (2007) https://doi.org/10.1117/12.728098
Event: European Conferences on Biomedical Optics, 2007, Munich, Germany

Abstract

Studies on corneal surgery and flap processing on enucleated porcine eyes have been performed using a dedicated 100 kHz femtosecond laser source based on Ytterbium technology. IR (1035 nm) and green (517 nm) flap processing have been studied. Comparisons for ocular femtosecond laser surgery are discussed in terms of process efficiency and safety aspects. Flaps with a typical diameter of 6 mm and 150 μm thick have been performed in less than 2 min with both wavelengths. The transmittances of femtosecond laser pulses through the ocular media of porcine eyes have been measured for a collimated beam and during flap processing. More than 25% of energy is transmitted through the whole eye at the retina during IR pulses flap processing. Concerning green pulses, if less energy is necessary to perform the flap which is of prime interest, the transmission of green light is very high and could be an undeniable obstacle for the safety.

Citation Download Citation

Ronan Le Harzic, Christian Wüllner, D. Bruneel, Christof Donitzky, and Karsten König "Femtosecond refractive eye surgery: study of laser parameters for even more efficiency and safety", Proc. SPIE 6632, Therapeutic Laser Applications and Laser-Tissue Interactions III, 663217 (13 July 2007); https://doi.org/10.1117/12.728098

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KEYWORDS

Femtosecond phenomena

Laser therapeutics

Surgery

Cornea

Laser vision correction

Eye

Safety

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