In May 1997, the Conseil d’évaluation des technologies de la santé du Québec (CETS) published a report dealing spe- cifically with excimer laser photorefractive keratectomy (PRK). Since then, the ophthalmological applications of the excimer laser have continued to evolve at a rapid pace. Furthermore, these applications, which are available essen- tially in the private sector, given that they are services paid for directly by patients, have been diffused very rapidly. Questions must therefore be asked about the efficacy and safety of this technology.
The purpose of this report is to update the assessment of the benefits and disadvantages of PRK and to examine more specifically LASIK (laser in situ keratomileusis). It also provides an overview of the alternatives and future developments and the research in this field. The indica- tions, contraindications and choice of procedure (PRK or LASIK) are discussed as well.