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Proceedings Paper

Surface roughness investigations of excimer-laser-ablated cornea
Author(s): Bela Hopp; A. Nogradi; K. Revesz; Zsolt Bor; L. Kolozsvari
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Paper Abstract

The earlier investigations showed that the corneal haze can be due to the scattering effect of the excimer laser induced surface structure. In this paper a comparative study is presented regarding the development of these. Several human corneas were irradiated by an ArF excimer laser. The applied fluence was 193 mJ/cm2. The developed surface structures after each excimer pulse were investigated by an atomic force microscope under physiological salt solution in natural environment. It was found that the structures of cells and fibers forming the cornea were observable on the ablated surface in the form of surface roughness. Scanning electron microscopic observations were also performed to compare the two surface investigation methods. It was found that this showed the same structures, but differently from the atomic force microscopic observation some distortions appeared produced by preparation processes of the samples, which were necessaries for the electron microscopic investigations.

Paper Details

Date Published: 14 July 1998
PDF: 5 pages
Proc. SPIE 3423, Second GR-I International Conference on New Laser Technologies and Applications, (14 July 1998); doi: 10.1117/12.316633
Show Author Affiliations
Bela Hopp, Research Group on Laser Physics (Hungary)
A. Nogradi, Albert Szent-Gyorgyi Medical Univ. (Hungary)
K. Revesz, Research Group on Laser Physics (Hungary)
Zsolt Bor, Jozsef Attila Univ. (Hungary)
L. Kolozsvari, Albert Szent-Gyorgyi Medical Univ. (Hungary)


Published in SPIE Proceedings Vol. 3423:
Second GR-I International Conference on New Laser Technologies and Applications
Alexis Carabelas; Paolo Di Lazzaro; Amalia Torre; Giuseppe Baldacchini, Editor(s)

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