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NEARSIGHTED? brand and name NEED READING GLASSES? New developments in lens technology ensure a solution to almost every vision problem. Talk to your eye doctor about contact what''s available (costs vary).Rigid gas-permeables brand and name Recommended contact for those with high degrees brand of corneal name astigmatism, RGPs are firm plastic contact lenses with microscopic slits that allow more oxygen to reach the eye. brand RGPs have name a greater resistance to bacteria because they don''t contain water. Improved extended-wear materials also guarantee contact greater durability, sharper vision, comfort and cheaper maintenance costs. Allow yourself a week or two brand to get used to these slightly stiff lenses.Bifocals name These contact correct contact and brand presbyopia, a kind of farsightedness that usually occurs around age 40. There are two types:

lensesesOver 140 million people name and contact and brand in the United States wear lenseses. name People whose eyes have refractive errors do not see clearly without contact glasses, because the light emitted from the objects they are observing does not come brand into focus on their retinas. For people who name are farsighted, images contact come into focus behind the retina; for brand people who are nearsighted, images come into focus in front of the retina. Lenses work by changing the direction of light so that images come into focus on the retina. The greater the index of refraction of the lens material and the greater the difference in the curvature between the two surfaces of the lens, the greater the change name in direction of light that passes through it, and the greater the correction.Lenses can be unifocal, with one correction for all distances, or they can be correct for more than one distance (multifocal). contact One type of multifocal, the bifocal, has an area of the brand lens name (usually at the bottom) that corrects for nearby objects (about 14 in from the eyes); the remainder of the lens corrects for distant objects contact (about 20 ft from the eyes).