Soft contact lens having toric rear face and rotationally symmetrical front face

摘要

The soft toric contact lens has a substantially rotationally symmetrical front face optionally having a rotationally symmetrical lenticular construction, and a substantially aspherical, especially ellipsoidal, rear face. The optically active central region of the rear face is toric. Shifting the torus to the central region of the lens rear face results in lenses that are economic to produce, are of wearable thickness and are straightforward to fit.