US Patent 11281023 Tear shaping for refractive correction

A lens for refractive tear shaping, including a curved lens body defining a central cavity indented into its posterior surface. The central cavity has a posterior facing tear shaping surface structured to form a tear lens within the central cavity. The central cavity is structured to define a tear lens within the central cavity by interaction between a tear film of the eye and the posterior facing tear shaping surface. The anterior curvature of the tear lens being dependent on the shape of the tear shaping surface.