RLE or refractive lens exchange is non-laser surgery during which an optical element (intraocular lens) is permanently implanted in the eye. The intraocular lens replaces the original human lens, the dioptric value of which did not correspond to the dioptric condition of the eye. Refractive lens exchange is suitable for patients over 40 years of age with disorders beyond the scope of laser surgery. Intraocular lenses are produced by Alcon, an American company, and have been approved for use by the European Union and the US FDA. The main advantage of RLE is that it is possible to remove any number of diopters through this method. RLE is also a preventive treatment - patients after refractive lens exchange are not at risk of cataract and the risk of paroxysmal glaucoma is substantially reduced. Therefore, RLE is an excellent choice for patients in which a high number of diopters is combined with familial predisposition to cataract and glaucoma. To patients who would also like to get rid of reading glasses, we recommend the PRELEX method, which is refractive lens exchange completed with so-called multifocal intraocular lens implantation. Our doctors have achieved long-term excellent results with RLE and PRELEX methods. The medical director of our clinic, MUDr. Josef Hycl, CSc., has been doing the surgery since 1993 and he was the first doctor in the Czech Republic to put these methods into medical practice. He has defended a scientific dissertation on the subject of RLE and been awarded the CSc. degree.