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 ...

"This study aimed to evaluate the equivalence of a smartphone-based visual acuity chart with a standard 6-m Snellen visual acuity (6SVA) chart." Researchers first reviewed Snellen chart apps that were ...

A smartphone app was found to be useful and reliable by clinicians when testing vision for children during the COVID-19 pandemic. Assessing vision was found to be easy by families and reliable by ...

What is the farthest a human can see? What is the best recorded visual acuity? How far is the horizon? I am often asked these questions by clinicians and non-ophthalmologists and thought many of you ...

Three visual acuity tests taken at home produce results comparable to those achieved with standard tests taken in the office, researchers say. All the tests are free. Two measure near vision, and the ...