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Modern Lenses appeared on the market, says general manager of laboratories contact lens division in Denver. Those lenses were made from a hard plastic called polymethyl methacrylate, or PMMA, that allowed no oxygen to reach the area of the cornea under cosmeticcontactlens the lens. Imagine sticking your glasses directly to your eyeballs--clear vision but discomfort and awkwardness. Bausch and Lomb introduced the first soft contact lens. This development signaled "a revolution in comfort to the patient," says a materials scientist at the University. Soft contacts rely on plastics called hydrogels, polymers that soak up a lot of water. The first hydrogel used for contacts was hydroxyethyl methacrylate, or HEMA. Lenses of this material can hold 38 to 70 percent water by weight, which makes the lens soft and flexible.

Modern Lenses appeared on the market, says general manager of laboratories contact lens division in Denver. Those lenses were made from a hard plastic called polymethyl methacrylate, or PMMA, that allowed no oxygen to reach the area of the cornea under cosmeticcontactlens the lens. Imagine sticking your glasses directly to your eyeballs--clear vision but discomfort and awkwardness. Bausch and Lomb introduced the first soft contact lens. This development signaled "a revolution in comfort to the patient," says a materials scientist at the University. Soft contacts rely on plastics called hydrogels, polymers that soak up a lot of water. The first hydrogel used for contacts was hydroxyethyl methacrylate, or HEMA. Lenses of this material can hold 38 to 70 percent water by weight, which makes the lens soft and flexible.

Soft lenses additionally come as disposable products (defined by FDA as used once and discarded) or as planned-replacement lenses. If you, like many Americans, wear eyeglasses or Lenses, you probably know that comparison-shopping can help you find quality eyewear that meets your budget. In fact, a Federal Trade Commission Regulation aids your ability to comparison shop for eyeglasses. Under federal law, you have a right cosmeticcontactlens to a copy of your eyeglass prescription so that you can shop for the best value in eyewear. If you are buying Lenses, comparison-shopping also can help you find an eye care specialist who offers products and services suited cosmeticcontactlens for you. This fact sheet explains what rights you have under the law and gives you information about various types of eye care professionals. It also gives some suggestions about selecting an eye care specialist and shopping for eye exams, eyeglasses, and Lenses.

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