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The effects of extended contact lens wear on the cornea have been studied extensively and are well-documented. When determining the effects of long-term contact lens use on the cornea, many studies do not differentiate between users of hard and soft contact lenses, while studies that have made this differentiation have found similar results.
Learn about the origins, development and applications of contact lenses, thin lenses placed directly on the surface of the eyes. Find out how contact lenses can correct vision, change appearance or treat eye conditions.
Orthokeratology is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia, and astigmatism. Learn about the history, mechanism, use, risks, and research of orthokeratology from this Wikipedia article.
Etafilcon A is a type of soft contact lens material that belongs to the FDA group IV, which has high water content and ionic properties. It is used in some brands of lenses, such as Cooper Clear, Cooper Toric, and Vantage.
Refractive error, also called ametropia, is a problem with focusing light on the retina due to the shape of the eye and/or cornea. Learn about the common types (nearsightedness, farsightedness, astigmatism, presbyopia), causes, diagnosis, and treatment options.
If you wear contacts, you're probably very familiar with the rules: Don't wear them overnight, don't wear them swimming, always wash your hands before touching your lenses. And of course, everyone ...
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