Contact lens and the method for manufacturing thereof

Details Contact lens and the method for manufacturing thereof Contact lens and the method for manufacturing thereof

G - Physics

02

C

88/40

G02C 7/04 (2006.01) B29D 11/00 (2006.01)

Patent

CA 1305342

ABSTRACT OF THE DISCLOSURE: The solution pertains to a new design of contact lenses and to the method of their manufacturing. The contact lens consists of a carrier part and a hydrophilic supporting part mediating the contact of the lens with the eye surface, whereas both these parts are made from different materials, wherein the supporting part is divided into two or more independent pieces protruding above the concave surface of the lens and led from the lens circumference towards the lens center which is left free, while gaps are provided between individual pieces and the supporting part is made from a water-swelling synthetic crosslinked hydrogel which has, in the state of full swelling with physiological saline, the swelling capacity of 40 to 95%, whereas the carrier optical part is made from a transparent material having elasticity modulus at least twice as high as is the elasticity modulus of the supporting part and where the supporting part forms a gap of at least 0.01 mm between the eye surface and the uncovered part of the lens.

564818

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