Basics of Soft Contact Lens Fitting
Basics of Soft Contact Lens Fitting Peter R. Kastl Corey Dickson David W. Lamberts When one considers whether to fit a rigid contact lens or a soft contact lens on…
Fresnel Optics
Fresnel Optics Merton C. Flom Anthony J. Adams Fig. 1. Principle of a Fresnel lens. Refracting or bending power of the lens depends primarily on the relative angle between its…
Spectacle Lens Tints and Coatings
Spectacle Lens Tints and Coatings Gregory L. Stephens Darryl J. Meister Tints and coatings used on spectacle lenses can make vision more comfortable, improve visibility and contrast, protect the eyes…
Spectacle Lens Design
Spectacle Lens Design Gregory L. Stephens Darryl J. Meister The results of a refraction specify the power of a lens only at its center, or along its optical axis. As…
Spectacle Lens Materials
Spectacle Lens Materials Gregory L. Stephens Darryl J. Meister Since the 1960s, the use of plastic as a spectacle lens material has increased dramatically. During this same time period, domestic…
Spectacle Lens Powers
Spectacle Lens Powers Gregory L. Stephens Darryl J. Meister1 The authors would like to acknowledge the contributions of the late John K. Davis to chapters 51 A-D. John was an…
The Human Eye as an Optical System
The Human Eye as an Optical System Milton Katz Philip B. Kruger Introduction The eye is a compound optical system composed of a cornea and a lens shown in Figure…
Geometrical Optics
Geometrical Optics Edmond H. Thall The discipline of geometrical optics deals with image formation by optical instruments. Physical optics (see elsewhere in these volumes) deals with the nature of light…
