This title is directed primarily towards health care professionals outside of the United States. The 3rd edition of Contact Lens Optics & Lens Design provides a straightforward introduction and offers solutions to the vast majority of contact lens optics problems likely to be encountered in practice. This edition has been thoroughly updated and contains integral coverage of soft lenses, information on the latest corneal measuring techniques, and expanded coverage of astigmatism and corneal toricity. It includes a new chapter on presbyopia and separate treatment of orthokeratology. Also included on the CD-ROM, is a set of invaluable computer programs, which allow the users to bypass tedious calculations in arriving at best fits.Offers solutions to the vast majority of contact lens optics problems Includes a companion CD-ROM with calculators to resolve fitting problemsRevised, expanded, and updated computer programs on CD-ROM New two-color design throughout Color plate section Integral coverage of soft and RGP lenses In-depth information on mean thickness and harmonic mean thickness Discussion of the latest corneal measuring techniques Wavefront aberrations Soft toric lenses discussed in detail New chapter on presbyopia correction and soft lens bifocal design Coverage of orthokeratology and other cutting-edge techniques