Bifocal Contact Lenses Edward S. Bennett Vinita Allee Henry ▪ INTRODUCTION There is very little doubt that tremendous potential exists for expanding your contact lens practice in the ever-increasing presbyopic…

Correction of Astigmatism Edward S. Bennett Kimberly A. Layfield P. Douglas Becherer The purpose of this chapter is to discuss methods of managing the astigmatic contact lens patient. These patients…

Soft Lens Problem Solving J. Bart Campbell Vinita Allee Henry John W. Marohn Two significant developments in the field of soft lenses have enormously enhanced the clinician’s available tools for…

Soft Lens Care and Patient Education Vinita Allee Henry ▪ DISINFECTION Many complications of soft lens wear develop after the lenses have been successfully fitted, when patients care for and…

Soft Lens Fitting and Evaluation Vinita Allee Henry ▪ PATIENT SELECTION Soft contact lenses, including conventional hydrogel and silicone hydrogel, are appealing to many patients as a result of both…

Modification Edward S. Bennett Keith Parker The in-office modification of gas-permeable (GP) lenses is a well-established art that has existed for many decades. The ability to change the lens design…

Verification of Gas-Permeable Lenses Vinita Allee Henry ▪ VERIFICATION OF RADIUS Base Curve Radius The base curve radius (BCR) is one of the most important lens parameters to verify because…

Soft Material Selection/Fitting and Evaluation Vinita Allee Henry Julie Ott DeKinder Soft contact lenses were introduced in the 1970s. The soft lenses were essentially hydrogel lenses, which were dependent on…

Lens Care and Patient Education Edward S. Bennett Heidi Wagner The ability to care for and handle rigid gas-permeable (GP) contact lenses properly depends on several factors. First, the patient…

Lens Design, Fitting, and Evaluation Edward S. Bennett Luigina Sorbara The ability to successfully fit rigid gas-permeable (GP) contact lenses is often what separates the good contact lens practitioner from…