Impaired vision and blindness are common. About 3.4 million people in the US are blind or visually impaired. Vision is usually measured by visual acuity charts, and normal vision is expressed as 20/20 ...
Whether you deal with conditions like dry, itchy eyes, blurred vision or cataracts -- or enjoy perfect 20/20 vision -- regular eye exams are essential for protecting your sight and maintaining eye ...
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