Abstract: An apparatus for cutting ocular lens materials is disclosed which includes a rotating drive unit, a chuck for holding the lens material, a main shaft for transmitting a rotational force from the rotating drive unit to the chuck, and a coupling for supporting the main shaft and the chuck in a freely rotatable way; the chuck comprising finger members that are normally urged toward the side where they are closed and a cylinder portion for operation in such a way as to open the finger members; the chuck and the main shaft being connected concentrically; a passageway being provided for applying a working pressure from outside to the cylinder portion.

Abstract: A cleaning instrument which can easily clean a lens in a short time without damaging the lens, which can clean both side surfaces of the lens at the same time, and which can serve also as a case for storing the lenses, includes a cleaning ball for cleaning a lens. A cleaning vessel is formed with a recessed cleaning chamber for housing a contact lens and the cleaning ball. The cleaning chamber has a bottom concave inner surface which is curved complementarily to the curvature of the lens so that the lens can be mounted in face-to-face contact therebetween.

Abstract: A contact lens cleaning device comprising a ball, a vessel formed with a recessed chamber for housing the lens and the ball, and a vibrator for vibrating the vessel. The chamber has a bottom concave surface so curved that the lens is mounted in face-to-face contact thereon. After the lens is sandwiched between the bottom concave surface of the chamber, the ball is cleaned when the vessel is vibrated by the vibrator.