The most fundamental aspect of a contact lens is its optics; the manner in which refraction light managed to optimise vision clinical benefit wearer. This report presents contemporary information on optical structure eye and models employed understand correction refractive error. design, measurement assessment spherical, aspheric, toric, multifocal myopia control lenses are described. complexit...

Corneal thickness changes were monitored in ten subjects (1) over a 36-hour period without contact lens wear and (2) during 7 days continuous wear of three types of hydrogel contact lenses of different back vertex powers. Measured on awakening, the mean overnight central corneal edema without lenses was 3.0% ± 1.2%. With the lenses used in this study, the mean overnight corneal swelling over th...

PURPOSE A recent increase in Acanthamoeba keratitis (AK) cases has been associated with Complete MoisturePlus, although many cases used other solutions. Complete MoisturePlus contains taurine and hydroxypropyl methylcellulose, unlike other multipurpose solutions (MPSs). The purpose of this study is to (1) determine contact lens solution efficacy against recent clinical and tap water Acanthamoeb...

Contact lens-related complications are common, affecting around one third of wearers, although most mild and easily managed. lenses have well-defined anatomical physiological effects on the ocular surface can result in other consequences due to presence a biologically active material. A contact lens interacts with tear film, surface, skin, endogenous environmental microorganisms, components car...