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Kvantovaya Elektronika, 2015 Volume 45, Number 2, Pages 180–184 (Mi qe16121)

This article is cited in 3 papers

Laser Gyroscopes

Optical transmission and laser ablation of pathologically changed eye lens capsule

A. A. Gamidova, A. V. Bolshunova, A. V. Yuzhakovb, E. M. Shcherbakovb, O. I. Baumb, È. N. Sobol'b

a Research Institute of Eye Diseases, Russian Academy of Medical Sciences, Moscow
b Institute on Laser and Information Technologies, Russian Academy of Scienses, Shatura, Moskovskaya obl.

Abstract: Optical transmission and ablation mechanisms in the secondary cataract films under the impact of 1.06-mm laser radiation are studied. The comparison of incident and transmitted (paraxial) radiation power at different values of the power density is carried out for two types of the eye lens capsule tissue (hard and soft) possessing different optical and mechanical properties. It is found that the effective attenuation coefficient for soft films is almost five times as large as that for the hard ones. The obtained measurement data on the transparency variation in the process of laser action allow the temperature evaluation and the determination of dominant mechanism of laser ablation, as well as the development of recommendations, providing the prevention or reduction of possible side effects. The obtained results can be used to optimise the regimes of laser impact in the process of the opacified lens capsule removal.

Keywords: laser ablation, optical properties of eye tissue, eye lens capsule.

PACS: 42.66.Ct, 79.20.Eb, 87.50.W-

Received: 25.07.2014
Revised: 27.10.2014


 English version:
Quantum Electronics, 2015, 45:2, 180–184

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