OPHTHALMIC OPTICAL LENS FOR VISION CORRECTION HAVING ONE OR MORE AREAS OF MORE POSITIVE POWER

摘要

The present disclosure is directed to lens, methods of making, designing lens and/or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and/or for controlling eye growth.

主权项

1. An ophthalmic lens comprising:
an optic zone comprising: at least one central portion having at least a first power profile and at least one peripheral portion having at least a second power profile;wherein the first power profile of the at least one central portion has at least a first step, the first step bounded on either side by a first junction and a second junction, the first power profile having a first change in the rate of change of power at the first junction and second change in the rate of change of power at the second junction, and
the second power profile of the at least one peripheral portion has at least a second step, the second step bounded on either side by a third junction and a fourth junction, the second power profile having a third change in the rate of change of power at the third junction and a fourth change in the rate of change of power at the fourth junction.