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 ...

Posts from this topic will be added to your daily email digest and your homepage feed. That familiar eyesight chart revolutionized vision testing, and we went to ridiculous lengths to test it out That ...

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 ...

Pictured is an example multi-modal representation of stock data created with Umwelt. It includes a line chart, a sonification (top right), and a multi-level textual description describing various ...