Assessment of visual acuity (VA) has been shown to vary between tests, which may be attributable in part to test inaccuracies, such as a change in the distance between the chart and subject. Therefore ...

EyeSpy 20/20 is a 21st-century answer to the 150-year-old wall chart used in vision screenings. The problem with amblyopia, commonly known as lazy eye, isn’t treatment. If caught early enough in ...

SEATTLE, Washington — An overwhelming majority of people with age-related macular degeneration would rather test their vision with an iPad app than with traditional methods, a new study shows. "One of ...

WILMINGTON -- Do you remember in school lining up with your class to take a vision test using the Snelling Chart -- big letters at the top, smaller letters in bottom rows? Something new has come 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 ...

As stay-at-home orders drag on, many of us are looking for ways to DIY tasks we used to outsource to professionals. While self-treating anything you’d normally visit a doctor for requires more care ...

A simple method of testing "twilight vision" gives reliable results in identifying people who have decreased visual acuity under low light conditions, according to a study. Using filters to test at a ...

Acuity of vision is a term used to describe the clearness or sharpness of your vision when measured at a distance of 20 feet. ‌ Visual acuity is the most common clinical measurement of how your eyes ...

A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may ...

Whether navigating winding country lanes or cruising on a busy motorway, clear vision is not merely a convenience but a fundamental requirement for road safety. Ensuring your eyesight remains adequate ...