It’s easy -- you’ll read an eye chart. Simple tests, like the "Random E Test," can determine the visual acuity of infants or nonreaders. Eyeglasses are the most traditional form. They bend ...

You take your glasses off or contacts out, then peer through a special device called a Phoroptor or refractor and focus on an eye chart 20 feet away. The eye doctor then asks if the chart appears ...

"I want the purple glasses," she said in a quiet ... such as having the child look through the corrective lenses to read off the eye chart. It can also help to overcome some communication or ...