YAG laser in ophthalmology

Helena Jelinkova, Jifi Pasta, Jan Sulc, Michal Nemec, Mitsunobu Miyagi, Yi Wei Shi, Yuji Matsuura

Research output: Contribution to journalConference article

Abstract

A summary of using near (Nd) and middle (Er) infrared YAG laser systems in ophthalmology surgery is given in the paper. The report on twelve years of clinical experience with the ophthalmic Nd:YAG laser system (X=l.06 urn) operating alternatively in Q-switched or mode-locked regimes is accomplished. From statistical data processing of more than 1000 interventions it follows that better results in a posterior capsule opacification cure are achieved with the use of short, near-infrared mode-locked 25 ps long pulses, while 4 ns long giant pulses of the same wavelength are useful for iridectomy creations. Middle infrared radiation generated by the Er:YAG laser system (k=2.94 urn) was used for pre-clinical interaction experiments (in vitro). Differences in results of cornea, lens, and sclera ablation by a free running (110 us long) and Q-switched (250 ns long) mid-infrared pulses are presented. The radiation was delivered to the interaction place either by a system of reflected mirrors (used for Nd:YAG laser), or by a special sealed waveguide (in the case of Er:YAG system).

Original languageEnglish
Pages (from-to)38-47
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4903
DOIs
Publication statusPublished - 2002 Oct 15
EventLaser Florence 2001: A Window on the Laser Medicine World - Florence, Italy
Duration: 2001 Nov 92001 Nov 10

Keywords

  • Corneal ablation
  • Er.YAG laser
  • Fibrin pupilar membranelysis
  • Mode-locked pulses
  • Nd:YAG laser
  • Posterior capsulotomy
  • Q-switched pulses
  • Sclera perforation
  • Therapeutical iridectomy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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