Introduction Patients are often lying when they say they have regularly taken the prescribed medicine . Hippocrates, 400 bc The issue that Hippocrates was highlighting was that of compliance – an important field of medicine that has been the subject…
Introduction Just as contact lenses (CLs) have become easier to fit over the past century, our knowledge base of the ocular response to lens wear has expanded exponentially over the same period. Thus there has been a commensurate shift in…
Introduction Follow-up examinations represent a fundamental aspect of healthcare, especially when managing ongoing or chronic conditions. In this context, contact lens wear can be considered a healthcare modality that requires ongoing management. The aftercare examination is therefore an important cornerstone…
Introduction A significant proportion of the population participates in sports or leisure-time physical activities. For example, a world-wide metaanalysis found that among adults, walking was the most popular activity in the Americas (19% of the population), Eastern Mediterranean (15%), Southeast…
Introduction Eye colour is universally recognized as an important and defining natural physical characteristic of the body human, and a contact lens is an effective vehicle for modifying or enhancing this appearance for those who wish to do so. More…
Introduction Contact lenses can be broadly categorised according to their frequency of use and frequency of replacement. Daily disposable lenses, which are worn during the day and discarded at the end of the day, are single-use, daily replacement lenses; this…
Introduction Daily disposable lenses are one of the two versions of true, single-use-only, contact lenses – the other being extended-wear lenses. Daily disposable lenses first became available in 1994. The premier daily disposable lens was launched in the United Kingdom…
Introduction Although lathing technology has been used to fabricate contact lenses since their invention over 130 years ago, developments over the past quarter of a century in precision engineering, materials technology and computer control systems have resulted in a capability…
Introduction Rigid lens materials have played an important role in the development of rigid contact lenses generally and occupy a small but significant place in the range of currently available products. Much of the relevant information is contained in the…
Introduction Three techniques are currently employed to manufacture soft contact lenses – lathe cutting, spin casting and cast moulding. A fourth disruptive technology, three-dimensional (3-D) printing, has also been proposed, but 3-D-printed soft contact lenses have yet to be produced…