Introduction: Topical Ocular Medications and Contact Lens Wear It is generally agreed that the concurrent use of particularly soft contact lenses and topical pharmaceutical agents in not advisable due to concerns regarding changes to the contact lenses and toxicity to…
Introduction Contact lens aftercare is the key to developing good lens performance and sustaining ocular tissue health; successful contact lens practice depends on this. It provides an opportunity not only to modify lenses and maintenance methods, but also to solve…
Patient management is the process of careful investigation before a patient is fitted with contact lenses and maintaining successful wear afterwards. It is a means of informing, examining and selecting potential wearers, as well as anticipating or investigating possible causes…
Introduction and History A scleral contact lens rests solely on the sclera. It is intended to vault the cornea in its entirety and to retain a fluid reservoir between the lens and the eye ( Fig. 14.1 ). Scleral lenses…
Introduction Presbyopia, resulting from a gradual decrement in visual function at near, is one of the most prevalent ocular conditions resulting in patient complaints and dissatisfaction in the 40 and older age group. Nevertheless, it also represents an outstanding opportunity…
Introduction The concept of extended wear (up to 1 week) or continuous wear (up to 1 month) holds considerable appeal for contact lens wearers because it brings them close to the world of the nonwearer. Being able to see clearly,…
Fitting Rigid Toric Lenses Indications for the use of rigid toric lenses Rigid toric lenses are indicated in preference to rigid spherical lenses under the following circumstances: ■ to improve vision in cases where a lens employing spherical front and…
Introduction Soft lenses were introduced initially in the early 1970s and now are the most prescribed lens type worldwide, used by 80–90% of contact lens patients ( ). Over the past 45 years there have been numerous improvements in materials…
Introduction With the advent of inexpensive, easy-to-fit hydrophilic lenses, some practitioners have abandoned the art of rigid gas permeable (RGP) lens fitting. However, there are many reasons why practitioners attempting to fit contact lenses with any degree of seriousness should…
Contact lens practitioners have a range of instrumentation available to them with which they can assess the anterior eye for its suitability to wear or continue to wear lenses, and with which they determine the most appropriate lenses to be…