TWO-ELEMENT SYSTEM TO PROVIDE EASE OF VISUAL ACUITY ACCOMMODATION WITH VARIABLE SPHERICAL ABERRATION CONTROL

摘要

PPROBLEM TO BE SOLVED: To provide an ophthalmologic lens capable of having variation of spherical power, and variation of spherical aberration. PSOLUTION: In one embodiment, the two-element ophthalmologic lens is composed in such a way that lateral shift of two elements in mutual relation can cause both variation of spherical power provided by the lens and variation of spherical aberration provided by the lens. In some other embodiments, thickness profile of the two elements is designed in such a way that variation of the spherical aberration is in positive relation with variation of the spherical power of the lens. PCOPYRIGHT: (C)2009,JPO&INPIT