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 ...

The principle of WHOeyes is based on how an eye care professional would assess visual acuity using a conventional chart in a clinical setting. The accuracy and usability of the app were tested in ...

Results from smartphone-based Snellen charts, which are eye charts used to measure visual acuity, are not consistent with results from standard Snellen visual acuity chart tests, according to a study ...

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 ...

VIENNA, Austria — Compared with subcutaneous interferon β-1a (IFNB-1a; Rebif/EMD Serono/Pfizer), treatment with alemtuzumab (Lemtrada, Genzyme/Sanofi) improved visual outcomes in treatment-naive ...

The testing of vision in infants and children has been treated separately from the testing of adults because infants and children often cannot be tested with the same materials and techniques as ...