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 ...

You may know someone who can’t tell the difference between specific colors — and there is a scientific reason it could be happening. The condition is known as color blindness. To share a better ...

Caring for your eyes and vision are important parts of a healthy lifestyle. Vision screening is a simple test of your vision that can detect problems early. An eye exam is a detailed check of your ...