What does 20/20 vision mean? When you visit your doctor or an eye care professional, you may be asked to read an eye chart. You may be told you have normal 20/20 vision. What does that really mean? An ...

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 ...

A routine (or comprehensive) exam uses a wide range of tests and procedures to evaluate your vision and the health of your eyes. Diagnostic tests are usually performed by a technician. These test ...

Her eye chart tests showed improvement. It took a radical experiment to find out why her reality wasn’t matching up. By Lisa Sanders, M.D. The burning started as soon as the 59-year-old woman put the ...