MULTIPLE-ELEMENT LENS TO CONTROL DEFOCUSSING AND OPTICAL POWER OF EYE AND METHOD FOR ITS APPLICATION Russian patent published in 2016 - IPC G02C7/06 G02B3/10 

FIELD: optics.

SUBSTANCE: multicomponent lens to control defocussing and optical power of eye contains large main convex lens, configured to create great defocussing, small main concave lens, creating small defocussing or focusing by combining, combined upon large main convex lens, or small single lens, creating small defocussing or focusing, made separately upon large main convex lens. Optical powers of large main convex lens and, after combining, large main convex lens and small main concave lens, or optical power of small single lens, correspond to formulae given in patent claim. Large main convex lens covers equatorial area of view.

EFFECT: technical result is effective control of magnification along eye axis for prevention of and treatment for myopia and hyperopia, and also convenience in use.

7 cl, 9 dwg, 17 tbl