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Preschool and school-age childrencontact are a significant improvement over lenseses for children and adolescents who participate in sports or outdoor activities.contact are recommended for most athletes who need corrective contact eyewear. Often, a single pair of lenses is less expensive than the combined cost of glasses and prescription goggles. Swimmers especially can benefit from being able to see underwater while wearing regular goggles over their contact. Because contact tend to dry the eye, swimmers and all athletes should take care to blink several times before and after an activity session in order to assure natural lenses cleansing. If any pool water enters a swimmer''s eyes, the lenses should be thoroughly special disinfected as soon as possible to remove pool contaminants. Children who like spending time looking into a telescope, microscope, or binoculars may also prefer contacts over lenseses.

Preschool and school-age childrencontact are a significant improvement over lenseses for children and adolescents who participate in sports or outdoor activities.contact are recommended for most athletes who need corrective contact eyewear. Often, a single pair of lenses is less expensive than the combined cost of glasses and prescription goggles. Swimmers especially can benefit from being able to see underwater while wearing regular goggles over their contact. Because contact tend to dry the eye, swimmers and all athletes should take care to blink several times before and after an activity session in order to assure natural lenses cleansing. If any pool water enters a swimmer''s eyes, the lenses should be thoroughly special disinfected as soon as possible to remove pool contaminants. Children who like spending time looking into a telescope, microscope, or binoculars may also prefer contacts over lenseses.

They are flatter and lighter than conventional lenses.There are many lenses and lens-coating options for individual needs, including coatings that block the ultraviolet effects (UV) light or UV and contact blue light which have been found to be harmful to the eyes. Such coatings are not needed on polycarbonate lenses, which already have UV protection. UV coatings are particularly important on sunglasses and ski goggles. Sunglasses, lenses when nonprescription, should be labeled with an indication special that they block out 99-100% of both effects UV-A and UV-B rays. There are anti-scratch coatings that increase the surface hardness of lenses contact (an important feature when using plastic lenses) and lenses anti-reflective (AR) coatings that eliminate almost all glare and allow special other people to see the eyes of the wearer. AR coatings may be particularly effects helpful to people who use computers or who drive at night. Mirror coatings that prevent other people from seeing the wearer''s eyes are also available. There is a whole spectrum of tints, from light tints to darker tints, used in sunglasses.

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