Patent ID: 7048759

Claim:
A method of selecting a suitable implantable correction lens for implantation in the posterior chamber of an eye between the iris and the intact natural lens, the correction lens comprising a centrally located optical part capable of providing an optical correction and a peripherally located supporting element capable of maintaining said optical part in said central location, wherein said optical part and said support element together have a concave posterior surface which is part of a non-spherical surface that is rotation symmetric around the optical axis of said optical part, wherein the intersection between said non-spherical surface and any plane containing the optical axis represents a flawless curve free from discontinuities and points of inflection, the method comprising the steps of: (i) determining the power of optical correction; (ii) estimating the anterior radius of the natural lens in its non-accommodated state; (iii) selecting a posterior central radius of the correction lens different from that of the natural lens in its non-accommodated state; (iv) determining the total lens vault based on the data arriving from steps (ii) and (iii); and (v) selecting a flawless curve free from points of inflection representing the interaction of the posterior surface and a plane containing the optical axis so as to provide an aspheric posterior lens surface.