The term "20/20 vision" refers to how sharp your eyes are when you look at a standard eye chart (Snellen chart) from a distance of 20 feet (or 6 meters)—depending on where you live. In the United ...

Given below is an online test for visual acuity using the E Chart, a chart with the letter 'E' in different directions (up, down, right and left) and sizes. This E chart visual acuity or eye vision ...

Need new glasses? Online eye exams and vision tests offer a convenient way to get a glasses prescription. Doctors explain ...

It is important to be able to assess visual function that is specifically ... Effect of scoring and termination rules on test-retest variability of a novel high-pass letter acuity chart. Invest ...