Novel monitoring of corneal surface hydration during photorefractive keratectomy using pulsed photothermal radiometry: In vitro study

Satoko Kawauchi, Hiroko Matsuyama, Minoru Obara, Miya Yoshikawa, Tsunenori Arai, Makoto Kikuchi, Masayoshi Katoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We developed novel monitoring methodology for corneal surface hydration during photorefractive keratectomy (PRK) in order to solve undercorrection issue at the central part of cornea (Central island). We employed pulsed photothermal radiometry to monitor corneal surface hydration. We performed two experiments; gelatin gel experiments and porcine cornea experiments in vitro. In the case of the gelatin gel experiments, the e-folding decay time of transient infrared radiation waveform from the ArF laser irradiated surface was prolonged from 420 μs to 30 ms with decreasing gelatin density from 15% to 0.15%. These measured e-folding decay times were good agreements with theoretical calculations. Using porcine cornea, we observed the e-folding decay time increase during the series of ArF excimer laser irradiations. Our method may be available to know ablation efficiency change to improve the controllability of refractive correction on the PRK.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages30-34
Number of pages5
Volume2971
DOIs
Publication statusPublished - 1997
Externally publishedYes
EventOphthalmic Technologies VII - San Jose, CA, United States
Duration: 1997 Feb 81997 Feb 8

Other

OtherOphthalmic Technologies VII
CountryUnited States
CitySan Jose, CA
Period97/2/897/2/8

Fingerprint

Radiometry
Hydration
cornea
gelatins
Cornea
folding
hydration
Gelatin
Folding
Monitoring
decay
Decay
gels
Experiment
Gels
Experiments
controllability
infrared radiation
Excimer Laser
Infrared Radiation

Keywords

  • Central island
  • Cornea
  • Hydration
  • Photorefractive keratectomy
  • Pulsed photothermal radiometry

ASJC Scopus subject areas

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

Cite this

Kawauchi, S., Matsuyama, H., Obara, M., Yoshikawa, M., Arai, T., Kikuchi, M., & Katoh, M. (1997). Novel monitoring of corneal surface hydration during photorefractive keratectomy using pulsed photothermal radiometry: In vitro study. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2971, pp. 30-34) https://doi.org/10.1117/12.275111

Novel monitoring of corneal surface hydration during photorefractive keratectomy using pulsed photothermal radiometry : In vitro study. / Kawauchi, Satoko; Matsuyama, Hiroko; Obara, Minoru; Yoshikawa, Miya; Arai, Tsunenori; Kikuchi, Makoto; Katoh, Masayoshi.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2971 1997. p. 30-34.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kawauchi, S, Matsuyama, H, Obara, M, Yoshikawa, M, Arai, T, Kikuchi, M & Katoh, M 1997, Novel monitoring of corneal surface hydration during photorefractive keratectomy using pulsed photothermal radiometry: In vitro study. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 2971, pp. 30-34, Ophthalmic Technologies VII, San Jose, CA, United States, 97/2/8. https://doi.org/10.1117/12.275111
Kawauchi S, Matsuyama H, Obara M, Yoshikawa M, Arai T, Kikuchi M et al. Novel monitoring of corneal surface hydration during photorefractive keratectomy using pulsed photothermal radiometry: In vitro study. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2971. 1997. p. 30-34 https://doi.org/10.1117/12.275111
Kawauchi, Satoko ; Matsuyama, Hiroko ; Obara, Minoru ; Yoshikawa, Miya ; Arai, Tsunenori ; Kikuchi, Makoto ; Katoh, Masayoshi. / Novel monitoring of corneal surface hydration during photorefractive keratectomy using pulsed photothermal radiometry : In vitro study. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2971 1997. pp. 30-34
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