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Russian Journal of Physical Chemistry A

, Volume 92, Issue 4, pp 674–677 | Cite as

Features of Laser-Induced Modification of Sclera and Cornea

  • N. Yu. Ignat’eva
  • O. L. Zakharkina
  • A. R. Dadasheva
  • A. R. Sadekova
  • V. N. Bagratashvili
  • V. V. Lunin
Chemical Kinetics and Catalysis
  • 13 Downloads

Abstract

Results are presented from studying collagen degradation in scleral and corneal tissues upon CW IR laser irradiation at a wavelength of 1.56 μm and powers of 1.4 and 7 W. The exposure time is such that the radiometrically determined maximum tissue temperature ranges from 55 to 70°C. It is shown that at a power of 1.4 W, laser-induced collagen denaturation in sclera and cornea starts at 55 and 60°C, respectively. When the power is increased to 7 W, the temperature of denaturation onset rises by 2°C. These findings are discussed from the viewpoint of the joint photothermal and photomechanical effects of laser irradiation.

Keywords

collagen denaturation differential scanning calorimetry laser heating 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • N. Yu. Ignat’eva
    • 1
  • O. L. Zakharkina
    • 2
  • A. R. Dadasheva
    • 3
  • A. R. Sadekova
    • 1
  • V. N. Bagratashvili
    • 2
  • V. V. Lunin
    • 1
  1. 1.Department of ChemistryMoscow State UniversityMoscowRussia
  2. 2.FNITs Crystallography and PhotonicsRussian Academy of SciencesMoscowRussia
  3. 3.Moscow State University (Baku Branch)BakuAzerbaijan

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