Controlled lens formation with unapertured excimer lasers: Use with organic polymers and corneal tissues

Amihay Fuxbruner, Tzhak Hemo, Aaron Lewis, Hanan Zauberman, Dani Blau, Dani Polotsky

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

A theoretical model is developed which allows for well-defined lenses to be formed with different dioptric properties using lasers that are known to ablate a variety of materials. With the theoretical development as a guide an experimental arrangement is defined for the ArF excimer laser and this arrangement is used to form lenses with highly smooth surfaces in three polymeric materials (polymethyl methacrylate, polycarbonate, and polyvinyl chloride) to test the validity of the theory. As part of the procedure to obtain these lenses, ablation curves (etch depth per pulse vs log of the laser fluence) were measured for each of these polymers and these curves are also reported. The experiments were extended to the rabbit cornea in which the corneal button was reshaped as part of keratomileusis surgery. This preliminary experiment resulted in a clear cornea with a smooth corneal surface and a measured change of 3 diopters in the treated eye.

Original languageEnglish
Pages (from-to)5380-5386
Number of pages7
JournalApplied Optics
Volume29
Issue number36
DOIs
StatePublished - 20 Dec 1990

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