Intrastromal refractive surgery by ultrashort laser pulses: Side effects and mechanisms

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • Alexander Heisterkamp
  • Gero Maatz
  • Tammo Ripken
  • Holger Lubatschowski
  • Herbert Welling
  • Elke Luetkefels
  • Wolfgang Drommer
  • Wolfgang Ertmer

Research Organisations

External Research Organisations

  • University of Veterinary Medicine of Hannover, Foundation
  • Laser Zentrum Hannover e.V. (LZH)
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Details

Original languageEnglish
Title of host publicationOphthalmic Technologies X
PublisherSPIE
Pages146-156
Number of pages11
Publication statusPublished - 7 Jun 2000
EventBIOS 2000 The International Symposium on Biomedical Optics - San Jose, CA, United States
Duration: 22 Jan 200028 Jan 2000

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3908
ISSN (Print)0277-786X

Abstract

The Feasibility of refractive surgery with ultrashort laser pulses in the fs-regime was studied. The Experiments were performed with an Erbium fibrelaser oscillator, which was amplified by means of chirped pulse amplification in a Titanium-Sapphire regenerative amplifier. With this system pulse durations of 180 fs and pulse energies of up to some hundred μJ were possible. The photodisruption was performed in corneal tissue in order to create corneal incisions and lamellars. Surface quality and thermal damages of the cuts inside the tissue were studied with the help of micromorphological analysis, such as scanning electron microscopy (SEM) and histological sections. High level precision along with minimal thermal damage could be observed. Saline solution as a model substance was used for studying side effects as bubble formation and pressure transients. The pressure measurements were performed using broadband acoustic transducers. Gas bubbles were analysed with respect to formation, dynamics, interaction and composition of different gas constituents with the help of flash photography and gas chromatography. The results demonstrate the minimal invasive treatment of corneal stroma by fs-photodisruption. Studies of secondary effects indicate, that additional processes have to be considered.

ASJC Scopus subject areas

Cite this

Intrastromal refractive surgery by ultrashort laser pulses: Side effects and mechanisms. / Heisterkamp, Alexander; Maatz, Gero; Ripken, Tammo et al.
Ophthalmic Technologies X. SPIE, 2000. p. 146-156 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3908).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Heisterkamp, A, Maatz, G, Ripken, T, Lubatschowski, H, Welling, H, Luetkefels, E, Drommer, W & Ertmer, W 2000, Intrastromal refractive surgery by ultrashort laser pulses: Side effects and mechanisms. in Ophthalmic Technologies X. Proceedings of SPIE - The International Society for Optical Engineering, vol. 3908, SPIE, pp. 146-156, BIOS 2000 The International Symposium on Biomedical Optics, San Jose, CA, United States, 22 Jan 2000. https://doi.org/10.1117/12.387518
Heisterkamp, A., Maatz, G., Ripken, T., Lubatschowski, H., Welling, H., Luetkefels, E., Drommer, W., & Ertmer, W. (2000). Intrastromal refractive surgery by ultrashort laser pulses: Side effects and mechanisms. In Ophthalmic Technologies X (pp. 146-156). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3908). SPIE. https://doi.org/10.1117/12.387518
Heisterkamp A, Maatz G, Ripken T, Lubatschowski H, Welling H, Luetkefels E et al. Intrastromal refractive surgery by ultrashort laser pulses: Side effects and mechanisms. In Ophthalmic Technologies X. SPIE. 2000. p. 146-156. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.387518
Heisterkamp, Alexander ; Maatz, Gero ; Ripken, Tammo et al. / Intrastromal refractive surgery by ultrashort laser pulses: Side effects and mechanisms. Ophthalmic Technologies X. SPIE, 2000. pp. 146-156 (Proceedings of SPIE - The International Society for Optical Engineering).
Download
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