ORTHOKERATOLOGY LENS WITH ASPHERIC STRUCTURE IN REVERSE CURVE

摘要

An orthokeratology lens is disclosed. A central optical zone is formed on an outer surface and an inner surface of the orthokeratology lens and can pass light to clearly focus on a central area of retina of eyeball; peripheral optical zones surround the central optical zone and can pass light to focus on a peripheral blurring area around the central area; a central part of the inner surface includes a base curve with eccentricity in range of 0 to 4, and a reverse curve, an alignment curve and a peripheral curve disposed outside the base curve in an outward order. A junction between the base curve and the reverse curve has a crossover point formed thereon, and a straight-line distance from the cornea of the eye ball to the crossover point between the base curve and the reverse curve is in range of 89 μm to 189 μm.