The Kindle version can be purchased via Amazon here for £50.

6^th Edition

Prof M Jalie SMSA FBDO (Hons) HonFCGI HonFCOptom MIMgt

Published by ABDO

Hardback

ISBN – 9780900099038

The standard text on the theory and application of spectacle lenses. Written for students of optometry, dispensing optics and optical technicians, the book covers the mechanical, optical properties and design of ophthalmic lenses. It includes several original graphic solutions to problems which arise in the design, manufacture and dispensing of lenses. The author, recognised as an international authority on the geometrical optics of ophthalmic lenses, obtained patents for the new generation of low-power aspheric lenses in 1980.

Essential reading for the following ABDO College courses:

Fellowship Dispensing Diploma

Foundation Degree in Ophthalmic Dispensing

Low Vision Honours

New to this 6^th edition

New sections on the following,

• Basic optical knowledge
• Dual aspherical surfaces
• Eighth generation progressive designs
• Radiant gradient power lenses for the control of progressive myopia

Plus

New text on Transitions Generation 8 and Vantage lenses

More on Brief historical summary of spectacle lens design

Previously new to the 5^th edition

Four new chapters:

• 15 Spectacle lens and binocular vision
• 22 Progressive power lenses
• 23 Adaptive spectacle lenses
• 24 Further ray tracing techniques

Plus, five appendices

All other chapters have been updated and modernised with the latest technology being described in detail

New sections in other chapters include:

• Three-dimensional description of rotationally symmetrical, toroidal and atoroidal surfaces
• The mathematics of lens shapes (as required by frame tracers)
• Free form technology and production
• Iso-prism zone theory
• Plastics materials
• Lens coatings
• Astigmatic decomposition
• Distortion in plano prisms
• Magnification by optical systems in general
• Various types of magnifying devices
• Computation of asphericity
• Atoroidal surface description