The present invention is directed to a machine programmed to edge an
ophthalmic lens blank. The machine includes an edger device for forming a
bevel in a peripheral edge of the lens blank, a central processing unit
operably associated with the edger device for controlling operation
thereof, and a computer program stored on a medium in communication with
the central processing unit. The computer program includes a first
instruction set operably causing the edger device to form a bevel in a
peripheral edge of a lens blank. A second instruction set operably causes
the edger device to form a step in the peripheral edge intermediate an
apex of the bevel and an interface between the peripheral edge and a
major surface of the lens blank. A method of controlling an edger device
for edging an ophthalmic lens blank and a computer program are also
disclosed.