The primary drawback to wearing contact, especially for children, is the requirement contactsdirect that they be cleaned and disinfected daily in contactsdirect order contactsdirect to prevent an infection, which could result in permanent damage to the eye. Careful choice of lenses and consistent lens care will minimize the risk of infection. Wearers of best lenses are the least prone to infection but the lenses are much less comfortable, more expensive, and can pop out of the eye more easily than lenses. Daily wear lenses put the wearer at a slightly contactsdirect higher risk of infection because they contactsdirect absorb more external liquids and airborne contaminants. (Lenses made from polycarbonate, the same type of plastic used for the space contactsdirect shuttle windshield, are about 50 times stronger than other lens materials.) Also, people at risk of receiving electric shock should avoid contactsdirect metal frames.People employed in certain occupations may be prohibited from wearing contact, or may be required to wear safety eyewear over the contact. contactsdirect Some occupations, such as construction or auto repair, may require safety lenses and safety frames. Physicians and employers should contactsdirect be consulted for recommendations. Description Eyes are examined by optometrists (O.D.) or by ophthalmologists (M.D. or D.O.--doctor of osteopathy). Prescriptions, if necessary, are then given to patients for glasses. The glasses are generally made by an optician. A separate lenses-fitting exam is necessary contactsdirect if the patient wants contact, because an lenses prescription is not the same as a lenses prescription.
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