Understanding Lens Surfacing Laboratory Eercises is designed to be used in either a formal teaching laboratory setting or on an individual apprenticeship-style learning basis. Despite inevitable changes in technology, the principles learned here will allow the reader to master the basic optical aspects of surfacing, and understand new developments. A person completing the exercises will be capable of working with all of the basic types of ophthalmic lenses including progressive addition lenses; know and understand prism concepts; easily select base curve and lens size; be able to establish thickness for lenses of varying sizes, powers and indexes using computers, lens charts, or basic calculations; understand how prism caused by the bifocal addition can be used to advantage; and predict whether a surfaced lens can be edged and remain within ANSI standards. * - Designed to be used in conjunction with the text Understanding Lens Surfacing * - Will produce a working knowledge of surfacing optics and layout in a hands-on-style setting * - Suitable for use in the formal teaching laboratory or on an individual apprecenticeship-style basis.