Spherical astigmatism correcting contact lenses

Abstract

Contact lenses for the treatment of a refractive error, particularly astigmatism, are provided. An exemplary lens comprises a soft continuous lens body configured to cover a corneal surface, the lens body having a posterior surface to be suspended over the corneal surface forming a free volume thereover, and at least one discrete discontinuity. The free volume may be configured to fill with tear fluid, forming a tear lens over the corneal surface for correcting the ocular refractive error. The discrete discontinuity may allow a portion of the lens body to conform to a meridian of the eye without substantially distorting an optical region of the lens body. The discrete discontinuity may allow tear fluid to flow into and out of the free volume to form the tear lens. Optical correction is provided by a combination of the optical region of the lens body and the tear lens.

Dependencies are inferred from the claim text.