Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Benedikt J. Jean"'
Autor:
Rudolf Walker, Alexander F. G. van der Meer, Thomas Bende, Benedikt J. Jean, Karl C. Schmiedt, Manfred Ostertag
Publikováno v:
Journal of biomedical optics. 2(2)
The ablation depth and collateral thermal damage for pulsed infrared photoablation as a function of wavelength with the free-electron laser (FEL) at 10.1, 11.8, 12.8, and 14.5 mm wavelengths is investigated. FEL data are compared with the blow-off an
Publikováno v:
SPIE Proceedings.
The model of corneal biotissue layers and their values of optical parameters are presented. The model of the processes involved in laser thermal keratoplasty of eye biotissues is proposed, and the results of computer modeling are presented. Character
Autor:
Thomas Bende, Benedikt J. Jean
Publikováno v:
Ophthalmic Technologies XI.
Wavefront analysis still have some technical problems which may be solved within the next years. There are some limitations to use wavefront as a diagnostic tool for customized ablation alone. An ideal combination would be wavefront and topography. M
Autor:
Peter John Bryanston-Cross, Claire M. Beck, Gordon P. McKenzie, Benedikt J. Jean, Jo Mitchell
Publikováno v:
SPIE Proceedings.
The F ree E lectron L aser for Infrared EX periments (FELIX) Free Electron Laser Facility provides a continuously tunable source ranging continuously through the 4.5 to 200 micron region. The infrared beam consists of short micropulses, which have a
Autor:
Thomas Bende, Benedikt J. Jean
Publikováno v:
Ophthalmic Technologies X.
Refractive gels, applied on the corneal surface in situ act as laser beam modulators. Depending upon their surface shape and absorbency, they can be used to reshape irregular surfaces or induce refractive effects. Three gels (Palm I Pallikaris, Greec
Publikováno v:
Ophthalmic Technologies X.
Customized ablation aiming to optimize visual acuity in refractive surgery requires objective data on corneal surface, like the contrast sensitivity. Fast ray tracing, using the high resolution 3-D elevation data in conjunction with Snell's law descr
Publikováno v:
SPIE Proceedings.
Laser photoablation using UV or IR lasers is known to trigger a photo acoustic event. Different target materials can be discriminated by analyzing the photoacoustic signal. In vitro measurements of NCPAS have revealed the necessity to integrate a num
Autor:
Thomas Bende, Benedikt J. Jean
Publikováno v:
SPIE Proceedings.
Topography assisted photoablation (TAP) is an important and logic step for future customized therapeutic photokeratectomy . Its goal is to reshape any irregular corneal surface in order to a achieve an ideal sphere. Accuracy and reproducibility of th
Publikováno v:
SPIE Proceedings.
Dielectric Spectroscopy (DES) is a non-invasive contact technique for the measurement of specific electrical properties of biological tissue induced by an external electric field. This method can also be used for in vivo measurements. The frequency o
Publikováno v:
SPIE Proceedings.
The knowledge of the kinetics and the density of the ejected particles can lead to a better understanding of the photoablation process. Therefore, the dynamic behavior of thermal laser ablation (initial velocity of ejected particles v0, recoil moment