CENTRAL OPTICS OF INCREASED HARDNESS IN SOFT CONTACT LENS FOR ASTIGMATIC CORRECTION

摘要

The present invention relates to a molded contact lens comprising a stiffer optical zone with respect to the peripheral zone of the contact lens providing an optical element for correcting astigmatism without the need for or without substantially minimizing the need for correction of the astigmatism. rotational misalignment. the optic zone with the highest elastic modulus bends over the cornea, thus allowing a tear lens to form. This tear lens follows or takes the shape of the back surface of the contact lens. The combination of the tear lens and the optical zone provides an optical element for refractive error correction.