ARTIFICIAL LENS, IN PARTICULAR A CONTACT OR INTRAOCULAR LENS, FOR CORRECTING PRESBYOPIA, POSSIBLY ASSOCIATED WITH OTHER VISUAL DEFECTS, AND RELATIVE PRODUCTION METHOD

摘要

An artificial lens (1) (contact lens or intraocular lens) for correcting presbyopia, possibly associated with other refractive defects, has at least one region (5) having a fourth-order aberration, in particular a spherical aberration, of more than zero and less than 3.5 µm, and possibly associated with a basic vertex power for correcting refractive defects, and with fourth- and higher-order aberrations for improving vision acuity. The lens is produced by ablating a surface of a base body of the lens by means of an appropriately controlled laser device, and according to a given photoablative pattern to induce the desired aberration.