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 ...

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 ...

"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 ...

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 ...

Researchers developed regression formulas that may be clinically beneficial for estimating visual prognosis after astigmatic correction and determining the surgical indication of astigmatic correction ...