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 Jaeger chart was designed to test near vision acuity. Eduard Jaeger von Jaxtthal (1818–1884) was an Austrian ophthalmologist and a professor at the University of Vienna who, in the 1850s, made ...

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 ...