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Title: Femtosecond lasers for microsurgery of cornea

Abstract

The review of femtosecond laser installations for medical applications is given and a new femtosecond ophthalmologic system for creation of a flap of corneal tissue during the LASIK operation is described. An all-fibre femtosecond laser emitting {approx}400-fs pulses at 1067 nm is used. The pulse repetition rate can vary from 200 kHz up to 1 MHz. The output energy of the femtosecond system does not exceed 1 {mu}J. A specially developed objective with small spherical and chromatic aberrations is applied to focus laser radiation to an area of an eye cornea. The size of the focusing spot does not exceed 3 {mu}m. To process the required area, scanning by a laser beam is applied with a speed no less than 5 m s{sup -1}. At a stage of preliminary tests of the system, the {Kappa}8 glass, organic PMMA glass and specially prepared agarose gels are used as a phantom of an eye. The femtosecond system is successfully clinically tested on a plenty of eyes of a pig and on several human eyes. The duration of the procedure of creation of a corneal flap does not exceed 20 s.

Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
22044004
Resource Type:
Journal Article
Journal Name:
Quantum Electronics (Woodbury, N.Y.)
Additional Journal Information:
Journal Volume: 42; Journal Issue: 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7818
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAMS; CHROMATIC ABERRATIONS; CORNEA; FIBERS; FOCUSING; GLASS; INSTALLATION; LASER RADIATION; MEDICINE; MHZ RANGE; OPERATION; PHANTOMS; PULSES; QUANTUM ELECTRONICS; SPHERICAL CONFIGURATION

Citation Formats

Vartapetov, Sergei K, Khudyakov, D V, Lapshin, Konstantin E, Obidin, Aleksei Z, and Shcherbakov, Ivan A. Femtosecond lasers for microsurgery of cornea. United States: N. p., 2012. Web. doi:10.1070/QE2012V042N03ABEH014760.
Vartapetov, Sergei K, Khudyakov, D V, Lapshin, Konstantin E, Obidin, Aleksei Z, & Shcherbakov, Ivan A. Femtosecond lasers for microsurgery of cornea. United States. https://doi.org/10.1070/QE2012V042N03ABEH014760
Vartapetov, Sergei K, Khudyakov, D V, Lapshin, Konstantin E, Obidin, Aleksei Z, and Shcherbakov, Ivan A. 2012. "Femtosecond lasers for microsurgery of cornea". United States. https://doi.org/10.1070/QE2012V042N03ABEH014760.
@article{osti_22044004,
title = {Femtosecond lasers for microsurgery of cornea},
author = {Vartapetov, Sergei K and Khudyakov, D V and Lapshin, Konstantin E and Obidin, Aleksei Z and Shcherbakov, Ivan A},
abstractNote = {The review of femtosecond laser installations for medical applications is given and a new femtosecond ophthalmologic system for creation of a flap of corneal tissue during the LASIK operation is described. An all-fibre femtosecond laser emitting {approx}400-fs pulses at 1067 nm is used. The pulse repetition rate can vary from 200 kHz up to 1 MHz. The output energy of the femtosecond system does not exceed 1 {mu}J. A specially developed objective with small spherical and chromatic aberrations is applied to focus laser radiation to an area of an eye cornea. The size of the focusing spot does not exceed 3 {mu}m. To process the required area, scanning by a laser beam is applied with a speed no less than 5 m s{sup -1}. At a stage of preliminary tests of the system, the {Kappa}8 glass, organic PMMA glass and specially prepared agarose gels are used as a phantom of an eye. The femtosecond system is successfully clinically tested on a plenty of eyes of a pig and on several human eyes. The duration of the procedure of creation of a corneal flap does not exceed 20 s.},
doi = {10.1070/QE2012V042N03ABEH014760},
url = {https://www.osti.gov/biblio/22044004}, journal = {Quantum Electronics (Woodbury, N.Y.)},
issn = {1063-7818},
number = 3,
volume = 42,
place = {United States},
year = {Sat Mar 31 00:00:00 EDT 2012},
month = {Sat Mar 31 00:00:00 EDT 2012}
}