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In vitro Yb,Er:Glass laser hydroacoustic processing of human cataract eye lens: influence of pulse structure on removal efficiency
Author(s): Andrey V. Belikov; Sergey V. Gagarsky; Andrey N. Sergeev; Sergey N. Smirnov; Alexey M. Zagorulko
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Paper 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.

Paper Details

Date Published: 3 June 2019
PDF: 6 pages
Proc. SPIE 11065, Saratov Fall Meeting 2018: Optical and Nano-Technologies for Biology and Medicine, 1106512 (3 June 2019); doi: 10.1117/12.2520516
Show Author Affiliations
Andrey V. Belikov, ITMO Univ. (Russian Federation)
Sergey V. Gagarsky, ITMO Univ. (Russian Federation)
Andrey N. Sergeev, ITMO Univ. (Russian Federation)
Sergey N. Smirnov, ITMO Univ. (Russian Federation)
Alexey M. Zagorulko, S. Fyodorov Eye Microsurgery Federal State Institution (Russian Federation)


Published in SPIE Proceedings Vol. 11065:
Saratov Fall Meeting 2018: Optical and Nano-Technologies for Biology and Medicine
Elina A. Genina; Valery V. Tuchin, Editor(s)

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