Discover Vital Information About Hard Contact Lenses before you buy
Hard Contact lenses were introduced in the 1930s. They now are available in different compositions, consistancies, functions, and cost.
Hard lenses normally cost between $50 to $125 and are made of polymethyl methacrylate (PMMA). These aids are able to correct acute vision problems and have excellent optical qualities. One concern is that they do not allow for exchange of oxygen from air to eye. Since the cornea, which is the clear dome shaped structure covering the colored section of the eye--has no blood vessels, it depends on contact with air to obtain oxygen. The decrease in access to air and the feeling of a foreign object (that is, the hard lens itself) in the eye create discomfort.
People work hard to desensitize their eyes, following strict schedules of an increasing number of hours per day to build up to an eight-hour maximum. Overall however, reviews for acuvue 2, Proclear and other brands have been very favorable, and it appears hard contact are only improving and are here to stay.
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