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 ...

Those treated with the device could also read, on average, five lines of a vision chart; some participants could not even see the chart before their surgery. The trial, with 38 patients in 17 hospital ...

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 ...

Eye drops combining pilocarpine and diclofenac helped patients read extra lines on vision charts, with effects lasting up to two years. The treatment could revolutionize presbyopia care as a safe, non ...

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 ...