Abstract: A multifocal intraocular lens is provided having two external refractive surfaces and a longitudinal axis, and a diffractive structure superimposed on one of the surfaces in the form of a Fresnel zone. To reduce eye traumatism during surgery, to shorten post-surgical time period, to increase visual acuity, and to ensure a constant quality image at any distance from an object, a multifocal intraocular lens is proposed in which at least one additional refractive surface is inserted between the two external refractive surfaces, wherein the at least one additional refractive surface divides the lens volume into zones made of materials having different refraction coefficients.
Type:
Application
Filed:
March 19, 2009
Publication date:
September 24, 2009
Applicant:
ICON LAB GMBH
Inventors:
Valeriy TREUSHNIKOV, Valentin CHEREDNIK, Elena VIKTOROVA, Olga STAROSTINA