CONSIDERATIONS ON THE BEHAVIOR OF THE SOFT CONTACT LENS MATERIALS

Abstract

Contact lenses are an option for correction of spherical ametropy and ocular astigmatism; may also be used for therapeutic purposes and not least for cosmetic purposes. Compared with air correction, contact lenses allow normal field of view, eliminates peripheral distortion of spectacle lenses, providing a magnification on the retina of about 7%, while allowing the restoration of binocular vision. It also adapts easily to the cornea, with small, relative to the corneal topography respecting the rule of the latter. Most times, contact lenses provide high wearing comfort, a correction lens better than air and can be individualized according to their preferences and comfort carriers. This paper aims to present the main types of materials used in manufacturing contact lenses and insist on time to dehydration very important in their adaptation. Are also presented an experimental test performed on a group of three types of contact lenses.