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 ...

When a person has 20/20 vision, they can see with standard visual acuity. This refers to the sharpness or clarity of an object 20 feet away. The general standard that corrective measures try to ...

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 ...

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 ...

Visual acuity -- the ability to discern letters, numbers, and objects from a distance -- is essential for tasks including recognizing a friend across a room and driving. Researchers previously assumed ...

From cataracts to glaucoma and diabetic eye disease, many serious vision problems in older adults show no early symptoms.

People with so-called "resting squint face" may seem like they are perpetually angry, but they may just be having trouble seeing. Focusing on close objects becomes increasingly difficult as people age ...