Patent ID: 7806526

Claim:
A progressive ophthalmic lens comprising an anterior face, a posterior face and an intermediate medium producing variations in optical power and astigmatism when said lens is used by a wearer, in which said variations result from: a first contribution resulting from variations of a sphere and cylinder of the anterior face of the lens; and a second contribution resulting from variations of at least one physical parameter of the lens distinct from the sphere and cylinder of the anterior face, and distinct from the resulting optical effects of the sphere and cylinder of the anterior face, and in which values of the physical parameter at different points on the lens are adapted so that the second contribution produces customization of the variations in optical power and astigmatism of the lens for a wearer as a function of at least one behavioral characteristic specific to the wearer, the lens being characterized in that it has a prescribed optical power and a prescribed astigmatism resulting from values of another physical parameter in different points of the lens, said other physical parameter being distinct from the sphere and cylinder of the anterior face, and from the physical parameter which produces the second contribution to the variations in optical power and astigmatism of the lens.