Er:YAG laser radiation in experimental ophthalmologic applications

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

研究成果: Conference article査読

8 被引用数 (Scopus)

抄録

Er:YAG laser system generating a radiation in a free-running, long-pulse mode regime with an output energy up to 610 mJ and a wavelength in a mid-infrared region (2.94 μm) was used for ophthalmic micro-surgery. As a delivery system a cyclic olefin polymer-coated silver hollow glass waveguide was used. The delivery system was ended either by a focusing optics (CaF2 lens) or by a special sapphire tip, for a non-contact and contact treatment, respectively. The corneal ablation and perforation of a sclera tissue were examined for the energies from 5 mJ up to 280 mJ and from 1 to 10 pulses in the case of non-contact and contact preparation. The threshold energy for the sclera ablation was measured for the non-contact procedure to be 122 mJ (24.3 J/cm2) in the case when 1 pulse was used. For the contact preparation this threshold energy was 270 J (34.4 J/cm2) for 5 pulses used. The iris contact ablation threshold energy was measured to be 10 mJ (1.3 J/cm2) for 1 pulse. The results show the usability of the 2.94 μm radiation in the ophthalmic surgery.

本文言語English
ページ(範囲)253-258
ページ数6
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
3908
出版ステータスPublished - 2000
外部発表はい
イベントOphthalmic Technologies X - San Jose, CA, USA
継続期間: 2000 1月 222000 1月 23

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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