Abstract: A continuously variable multi-focal soft contact lens wherein a continuous optical gradient in a region smaller than the maximum pupil opening is provided. The concave surface is aspheric with a desired optical power for distant viewing at the center which increases to the desired near vision power. The increase is usually about 3 to 5 diopters within 6 mm of the anterior optical zone (AOZ) which is approximately 9.7 mm in diameter when wet. Outside this 6 mm zone the concave surface is essentially spherical. The concave surface is an aspheric curve having a steeper curve in the middle than a base curve r.sub.2. The curve at the center is the steepest and is designated as r.sub.2 '. Once r.sub.2 and r.sub.2 ' curves are determined, the thickness of the lens (t) and the radius of curavation for AOZ designated r.sub.1 is calculated using the desired optical power at the apex of the lens (P.sub.

Abstract: A device is provided for forming aspheric surfaces in an optical lens by distorting the lens blank in a predetermined manner and forming spherical surfaces in the distorted lens. One or both surfaces of the lens may be formed with an aspheric surface. The resultant lens may include a cylindrical correction also produced by distortion or may include substantially continuous bifocal lens. The lens is particularly adapted for application as a contact lens.