Clinical Optics and Refraction,
Edition 1 A Guide for Optometrists, Contact Lens Opticians and Dispensing Opticians
Edited by Andrew Keirl, BOptom(Hons), MCOptom, FBDO and Caroline Christie, BSc(Hons), FCOptom, DCLP

Publication Date: 06 Sep 2007
It provides a comprehensive and clinically based guide to visual optics. With its suggested routines and numerous examples, this new book offers a straightforward "how to approach" to the understanding of clinical optics, refraction and contact lens optics. Designed for easy access, it presents information in a concise format that highlights key, need-to-know points. Part 1 addresses the basic visual optics of the eye along with emmetropia, ametropia and the correction of ametropia with spectacle lenses. Part 2 turns to the optics of contact lenses and the use of contact lenses in vision correction.

Key Features

  • Numerous worked examples based on real examination questions
  • Practical and user friendly text
  • Over 190 clear line diagrams
  • An essential passport to examination success and a valuable quick reference for practitioners
About the author
Edited by Andrew Keirl, BOptom(Hons), MCOptom, FBDO, In private practice, Noakes and Habermahl, Cornwall, UK; Caroline Christie, BSc(Hons), FCOptom, DCLP, Optometrist and Contact Lens Practitioner, NF Burnett Hodd, London, UK; Director, Optometric Educators Ltd and Visiting lecturer, City University, London UK
Table of Contents
Part 1. Background Optical Principles. Schematic Eyes, Emmetropia and Ametropia. Emmetropia and Ametropia. The Correction of Spherical Ametropia. The Basic terinal Image. Spectacle Magnification and the Corrected Retinal Image. Astigmatism. Retinoscopy. Visual Acuity and the Measurement of Visual Function. Subjective Refraction: Principles and Techniques for the Correction of Spherical Ametropia. Subjective Refraction: Principles and Techniques for the Correction of Astigmatic Ametropia. Binocular Balancing and Binoculer Refraction. Accommodation and Presbyopia. Determination of the Near Addition. Convergence. Automated Methods of Refraction.

Part 2. The Correction of Refractive Errors Using Contact Lenses. Measurement of the Cornea: The Keratometer and Beyond. Ray-tracing Through RGP Contact Lenses and Contact Lens-Tear Lens Systems. Spectacle Magnification and Relative Spectacle Magnification. Contact Lens Materials: Physical and Optical Properties. The Correction of Astigmatism with Rigid Gas Permeable Contact Lenses. The Correction of Astigmatism with Soft Contact Lenses. Ray-tracing Through Soft Contact Lenses and Soft Contact Lens Hydration Factors. The Correction of Presbyopia with Contact Lenses. Over-refraction Techniques in Contact Lens Practice. Accommodation and Convergence: Spectacles vs Contact Lenses. Accommodation and Convergence: Spectacles versus Contact Lenses. The Axial and Radial Edge Thicknesses of a Contact Lens. Contact Lens Verification. Binoculer Vision: The Basics. Binocular Vision Considerations in Contact Lens Practice.
Book Reviews
“With its ‘hands on’ approach, it offers much to anyone involved in optometry and dispensing optics…For anyone studying dispensing optics, it clearly presents and profusely illustrates (in both pictures and examples) many aspects of their study. The many pictures and clear diagrams, including colour plates supporting the contact lens text, complete a worthy addition to the shelf of anyone studying or practicing in the sphere of professional optics today.¿

Duncan Counter, Dispensing Optics, November 2007

"The style of simple phraseology and examples in the text means of clearly putting across a subject which many think of as dry and boring. This book tries to dispel this myth and does, on balance, succeed…Each chapter has ‘concluding points’ which are a good summary of what you have read…It is targeted at both undergraduate and newly qualified optometrists, contact lens opticians and dispensing opticians and I believe it is set at the correct level"

Judith Morris
Book details
ISBN: 9780750688895
Page Count: 368
Retail Price : £72.99
Undergraduate optometry students; student dispensing opticians; contact lens students.