Ultrafast Photography of the Cornea Ablation
When UV laser radiation with an energy density close to 0.2 J/cm2 falls onto the cornea, the surface is ablated away to a depth of 0.1–1 μm [1–3] making this kind of radiation capable of producing precise optical etching of the cornea. This technique can be used for photorefractive keratectomy and for smoothing the exterior corneal surface [4–6]. Despite the considerable interest in excimer laser “corneal sculpting”, many of the physical mechanisms involved in the biological tissue removal process are unknown. In this paper we investigate the formation of shock wave in the air above the eye, the ejection of ablation plume and the propagation of the surface wave on the eye.
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- 1.S.L. Trokel, R. Srinivasan, B. Braren, Am J. Ophthalmol, 96, 710–715 (1983).Google Scholar
- 2.J. Marshall, S. Trokel, S. Rothery, H. Shubert, Ophthalmology, 92, 749–758 (1985).Google Scholar
- 3.C.A. Puliafito, R.F. Steiner, T.F. Deutsch, F. Hillenkamp, E.J. Dehm, C. M. Adler, Ophthalmology 92, 741–748 (1985)Google Scholar
- 4.A. M. Cotliar, H. D. Shubert, E. R. Mandel, S. L. Trokel, Ophthalmology, 92, 206–208 (1985).Google Scholar
- 6.A. P. Fasano, H. Moreira, P. J. McDonell, A. Sinbawy, Ophthalmology 98, 1782–1785, (1991).Google Scholar