how effectively do the new refractive surgery proceduress improve nearsightednes

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for some seven centuries now, researchers have recognized and understood a number of common vision ailments.but up until recently,the only sucessful tr4eatment ever developed for a few of those most frequently occurring namely nearsightedness, farsightedness, adn astigmatism was a pair of specially prescribed corrective lenses. these three well-known eye problems,present to some degree in most of us, are collectively freferred to as refractive errors.such lenses grtadually took their place as the accepted, standard method of vision correction.refractive errors are the primary reason why approximately 100 million americans must rely on eyeglasses or contact lenses in order to see clearly.however,thanks to space age technology and the work of a few pioneering eye surgeons,we may be the last generation to use these devices.since as much as 85 percent of all the information we recieve is processed through our eyes,corrective lenses do offer a number of obvious and indeniable benefits.