Patent ID: 8931897
Filing Date: 2015-01-13
Classification: G02C

Abstract:
1. A contact lens for myopia, the contact lens comprising an inner lag reduction optic zone with a diameter in the range of 1 to 2 mm, a transition zone and an outer myopia correction optic zone surrounding the transition zone, the outer myopia correction optic zone having at least a portion immediately adjacent said transition zone with negative power that corrects myopia of the eye of a wearer, wherein the inner lag reduction optic zone is such as to reduce or eliminate lag of accommodation by said eye when viewing at near distances, said inner lag reduction optic zone having an add power portion with a substantially constant add power relative to the said negative power of between 0.5 diopters and 4 diopters inclusive, and wherein the transition zone occupies a radial distance of 0.5 mm or less.