OPTIMIZATION OF LASER SURGERY OF THE SECONDARY CATARACT

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  • Authors: Baum O.I.1,2, Romanov O.G.3,4, Gamidov A.A.5,6, Fedorov A.A.5,6, Romanov G.S.7,8, Zheltov G.I.9,10, Sobol E.N.1,2
  • Affiliations:
    1. Institute of Laser and Information Technologies of the Russian Academy of Sciences
    2. 2 Pionerskaya ul., Troitsk, Moscow, 142092, Russian Federation
    3. Belarusian State University
    4. 4 Nezavisimosti pr., Minsk, 220030, Republic of Belarus
    5. State Research Institute of Eye Diseases of Russian Academy of Sciences
    6. 11 Rossolimo ul., Moscow, 119021, Russian Federation
    7. A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus
    8. 15 P. Brovka ul., Minsk, 220072, Republic of Belarus
    9. B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
    10. 68 Nezavisimosti pr., Minsk, 220072, Republic of Belarus
  • Issue: Vol 44, No 2 (2016)
  • Pages: 130-139
  • Section: ARTICLES
  • URL: https://almclinmed.ru/jour/article/view/329
  • DOI: https://doi.org/10.18786/2072-0505-2016-44-2-130-139
  • ID: 329


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Abstract

Background: This is a theoretical and experimental study of the thermomechanical effects of laser radiation with a wavelength of 1.06 microns on the eye tissues during a laser surgery on the secondary cataract (pupillary membrane). Its relevance is related to the rates of complications after laser surgery of the eye associated with the choice of energy and time parameters of the laser irradiation. These parameters are related to the occurrence of such factors as unstable fields of thermal stress and pressure that are difficult to take into account and indirectly lead to adverse events when removing the secondary cataract. Aim: To minimize side effects and to optimize the existing technology of laser removal of the secondary cataract. Materials and methods: Samples of a  normal lens capsule and of lens capsules with various types of opacities taken during a  cataract surgery, with various optic characteristics and thickness, were treated with an infrared laser (Nd:YAG laser, 1064 nm). We performed morphometric measurements and built up a  theoretical model of the processes in a continuous medium under the effects of impulse laser irradiation. Results: The results of numerical modelling with this newly developed theoretical model are in satisfactory agreement with the experimental data on development of deformities obtained with the autopsy materials (posterior capsule of the human lens with various optical characteristics and thickness, from thin transparent membranes to more thick opaque samples). Conclusion: This study would allow for optimization of the technology of laser treatment for secondary cataracts by changing the irradiation parameters during the procedure. 

About the authors

O. I. Baum

Institute of Laser and Information Technologies of the Russian Academy of Sciences; 2 Pionerskaya ul., Troitsk, Moscow, 142092, Russian Federation

Author for correspondence.
Email: baumolga@gmail.com
PhD (in Physics and Mathematics), Senior Research Fellow, Advanced Laser Technologies Department Russian Federation

O. G. Romanov

Belarusian State University; 4 Nezavisimosti pr., Minsk, 220030, Republic of Belarus

Email: baumolga@gmail.com
PhD (in Physics and Mathemat- ics), Associate Professor, Head of Chair of Computer Modelling Belarus

A. A. Gamidov

State Research Institute of Eye Diseases of Russian Academy of Sciences; 11 Rossolimo ul., Moscow, 119021, Russian Federation

Email: baumolga@gmail.com
MD, PhD, Senior Research Fellow, Laboratory of New Laser Technologies Russian Federation

A. A. Fedorov

State Research Institute of Eye Diseases of Russian Academy of Sciences; 11 Rossolimo ul., Moscow, 119021, Russian Federation

Email: baumolga@gmail.com

MD, PhD, Leading Research Fellow

Russian Federation

G. S. Romanov

A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus; 15 P. Brovka ul., Minsk, 220072, Republic of Belarus

Email: baumolga@gmail.com
PhD (in Physics and Mathematics), Senior Research Fellow Belarus

G. I. Zheltov

B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus; 68 Nezavisimosti pr., Minsk, 220072, Republic of Belarus

Email: baumolga@gmail.com
PhD (in Physics and Mathemat- ics), Professor, Principal Research Fellow Belarus

E. N. Sobol

Institute of Laser and Information Technologies of the Russian Academy of Sciences; 2 Pionerskaya ul., Troitsk, Moscow, 142092, Russian Federation

Email: baumolga@gmail.com
PhD (in Physics and Mathematics), Head of Laboratory of Biophotonics Russian Federation

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Copyright (c) 2016 Baum O.I., Romanov O.G., Gamidov A.A., Fedorov A.A., Romanov G.S., Zheltov G.I., Sobol E.N.

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