INTRAOCULAR LENS Russian patent published in 2009 - IPC A61F2/14 

FIELD: medicine; ophthalmology.

SUBSTANCE: intraocular lens contains haptic and optical part including spherical surface. The optical part consists of one component with anterior surface containing two surfaces. The first surface is designed as a segment of convex spherical surface with convex towards a cornea. The symmetry axis of spherical surface matches principal symmetry axis of intraocular lens. The second surface is shaped as hyperbolic paraboloid. Haptic part includes marking elements shaped as rectilinear lines direction of which matches that of longitudinal symmetry axis of hyperbolic paraboloid. Posterior surface of optical and haptic parts are flat.

EFFECT: correction of presbyopia combined with mixed astigmatism, extended range of intraocular lenses.

2 dwg