Visual acuity is a measure of how small a detail that is visible can be, and still be identified by a person. The most common way of testing vision is to use an eye chart, (the kind that you see in 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 ...

Patricia DeLucia has spent decades studying something many of us never think about: judgments about collisions that are crucial for safety. But the roots of her research stretch back to her childhood, ...

Patricia DeLucia has spent decades studying something many of us never think about: judgments about collisions that are crucial for safety. But the roots of her research stretch back to her childhood, ...

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 ...

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