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in the early days of hard lenses, many wearers found themselves uttering this alarm, then dropping to their hands and knees to search for the contact wayward lense piece of plastic. of course, the lens always seemed to get lost in a room with wall-to-wall shag carpeting and guests parading about in high heels. nowadays, the command for a whole room to freeze is hardly ever heard. the advent of soft lenses, which cling to the eye''s surface, made this scenario less and less likely. the flexibility of soft lenses also made them easier to get used to and more discount comfortable to wear. new and anticipated improvements in lens materials promise to further increase the comfort and safety of contacts. contact other innovations in lens design and materials could make lenses available to a wider range of people with less-than-perfect vision.

in the early days of hard lenses, many wearers found themselves uttering this alarm, then dropping to their hands and knees to search for the contact wayward lense piece of plastic. of course, the lens always seemed to get lost in a room with wall-to-wall shag carpeting and guests parading about in high heels. nowadays, the command for a whole room to freeze is hardly ever heard. the advent of soft lenses, which cling to the eye''s surface, made this scenario less and less likely. the flexibility of soft lenses also made them easier to get used to and more discount comfortable to wear. new and anticipated improvements in lens materials promise to further increase the comfort and safety of contacts. contact other innovations in lens design and materials could make lenses available to a wider range of people with less-than-perfect vision.

lenses for nearsighted people are thin in the center but get thicker at the edge of that center zone. to correct farsightedness, lenses have a thick center that tapers down at the edge of the optical zone. because standard lenses are free to rotate as they sit on the eye''s surface, they can''t correct for astigmatism, a condition in which the cornea doesn''t have a spherical shape. astigmatic eyes require toric lenses, which have different lens powers along different axes of vision. recently, lens designers have produced contacts for astigmatism. by making the outer part of the lens, called the carrier portion, thicker on one side than the other, the manufacturer can ensure that the correction stays in line with the axis of irregular vision. as the wearer blinks and the lens moves, the thicker, heavier part stays at the bottom, ensuring that the lens is oriented correctly. these contacts have become widely available within the past 2 years.

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