Abstract: A cutaway pad for surfacing lenses with grinding or polishing slurries which flow into and along the cuts for distribution across a lens surface worked thereover. The heretofore pad floppiness is relieved with a continuous film backing which is readily conformable to a surfacing tool face and affords large area contact to prevent pad slippage during lens surfacing.

Abstract: An expandable adaptor for interchangeable lens surfacing tools (laps). The adaptor is constructed and arranged to prevent tool loosening and/or rotational slippage during lens abrading and polishing operations. An expandable portion of the adaptor receives the customarily recessed rim of a tool and tightly grips the tool rim in collet fashion responsively to pressure exerted against the tool during a lens surfacing operation.

Abstract: Ophthalmic lens surfacing with preformed tools (laps) requires the traditional blocking and pressing of a lens against the tool with force applied to the block. Lens blocks being thereby geometrically decentered in many of larger diameter lenses causing force applied to the block to be unevenly distributed over the lens-tool surfacing interface. This being detrimental to final lens surface shape and finish is avoided according to the present invention by the provision of a universally adjustable lens block adaptor designed to receive and distribute the surfacing pressure uniformly over the lens-tool interface.