Temperature monitoring by infrared radiation measurements during ArF excimer laser ablation with cornea

Miya Ishihara, Tsunenori Arai, Shunichi Sato, Hironori Nakano, Minoru Obara, Makoto Kikuchi

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

We measured infrared thermal radiation from porcine cornea during various fluences ArF excimer laser ablations with 1 μs rise time. To obtain absolute temperature by means of Stefan-Boltzman law of radiation, we carried out a collection efficiency and detective sensitivity by a pre-experiment using panel heater. We measured the time course of the thermal radiation intensity with various laser fluences. We studied the relation between the peak cornea temperature during the ablation and irradiation fluences. We found the ablation situations, i.e., sub-ablation threshold, normal thermal ablation, and over-heated ablation, may be judged by both of the measured temperature transient waveformes and peak temperature. The boundary fluences corresponding to normal thermal ablation were 90 and 160 mJ/cm2. Our fast remote temperature monitoring during cornea ablation might be useful to control ablation quality/quantity of the cornea ArF laser ablation, that is PRK.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages335-339
Number of pages5
Volume3601
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1999 Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical - San Jose, CA, USA
Duration: 1999 Jan 241999 Jan 27

Other

OtherProceedings of the 1999 Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical
CitySan Jose, CA, USA
Period99/1/2499/1/27

Fingerprint

radiation measurement
cornea
infrared radiation
Excimer lasers
Laser ablation
Ablation
excimer lasers
laser ablation
ablation
Infrared radiation
Monitoring
fluence
Temperature
temperature
Heat radiation
thermal radiation
heaters
radiant flux density
Irradiation
Radiation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Ishihara, M., Arai, T., Sato, S., Nakano, H., Obara, M., & Kikuchi, M. (1999). Temperature monitoring by infrared radiation measurements during ArF excimer laser ablation with cornea. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3601, pp. 335-339). Society of Photo-Optical Instrumentation Engineers.

Temperature monitoring by infrared radiation measurements during ArF excimer laser ablation with cornea. / Ishihara, Miya; Arai, Tsunenori; Sato, Shunichi; Nakano, Hironori; Obara, Minoru; Kikuchi, Makoto.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3601 Society of Photo-Optical Instrumentation Engineers, 1999. p. 335-339.

Research output: Chapter in Book/Report/Conference proceedingChapter

Ishihara, M, Arai, T, Sato, S, Nakano, H, Obara, M & Kikuchi, M 1999, Temperature monitoring by infrared radiation measurements during ArF excimer laser ablation with cornea. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3601, Society of Photo-Optical Instrumentation Engineers, pp. 335-339, Proceedings of the 1999 Laser-Tissue Interaction X: Photochemical, Photothermal, and Photomechanical, San Jose, CA, USA, 99/1/24.
Ishihara M, Arai T, Sato S, Nakano H, Obara M, Kikuchi M. Temperature monitoring by infrared radiation measurements during ArF excimer laser ablation with cornea. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3601. Society of Photo-Optical Instrumentation Engineers. 1999. p. 335-339
Ishihara, Miya ; Arai, Tsunenori ; Sato, Shunichi ; Nakano, Hironori ; Obara, Minoru ; Kikuchi, Makoto. / Temperature monitoring by infrared radiation measurements during ArF excimer laser ablation with cornea. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3601 Society of Photo-Optical Instrumentation Engineers, 1999. pp. 335-339
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