In vitro Yb,Er:Glass laser hydroacoustic processing of human cataract eye lens: influence of pulse structure on removal efficiency

Andrey V. Belikov; Sergey V. Gagarsky; Andrey N. Sergeev; Sergey N. Smirnov; Alexey M. Zagorulko

doi:10.1117/12.2520516

3 June 2019 In vitro Yb,Er:Glass laser hydroacoustic processing of human cataract eye lens: influence of pulse structure on removal efficiency

Andrey V. Belikov, Sergey V. Gagarsky, Andrey N. Sergeev, Sergey N. Smirnov, Alexey M. Zagorulko

Author Affiliations +

Proceedings Volume 11065, Saratov Fall Meeting 2018: Optical and Nano-Technologies for Biology and Medicine; 1106512 (2019) https://doi.org/10.1117/12.2520516
Event: International Symposium on Optics and Biophotonics VI: Saratov Fall Meeting 2018, 2018, Saratov, Russian Federation

Abstract

The paper discusses the influence of time profile of microsecond Yb,Er:Glass laser pulse on removal efficiency of cataract lens when performing its laser hydroacoustic processing. It was established that the increase in peak power of the "leading" spike of Yb,Er:Glass microsecond pulse leads to increase in volume of laser-produced steam-gas cavities in liquid, increase in pressure transient amplitude arising in the phase of "collapse-rebound" of the cavity and increase in removed volume of cataract lens as a result of its laser hydroacoustic processing (LHP). Increasing the peak power of the "leading" spike by 2.5÷3 times while keeping the total integral laser pulse energy resulted in a 5÷7-fold increase in the removed volume of human eye lens with III degree of cataract according to L. Buratto classification. The possible multipulse mechanism of cataract lens removal when performing LHP with microsecond Yb,Er:Glass laser pulses is discussed.

Citation Download Citation

Andrey V. Belikov, Sergey V. Gagarsky, Andrey N. Sergeev, Sergey N. Smirnov, and Alexey M. Zagorulko "In vitro Yb,Er:Glass laser hydroacoustic processing of human cataract eye lens: influence of pulse structure on removal efficiency", Proc. SPIE 11065, Saratov Fall Meeting 2018: Optical and Nano-Technologies for Biology and Medicine, 1106512 (3 June 2019); https://doi.org/10.1117/12.2520516

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