To provide a framework for the development of this software, the authors conducted a survey of a wide variety of available VA conversion charts. No attempt was made to study the various strategies ...

Perceptual learning may offer sustained visual acuity improvements in keratoconus patients, according to a study published in the American Journal of Ophthalmology.“Overall, the results of this ...

Visual acuity was tested in 82 eyes of 41 patients with a mean (SD) age of 5.2 (0.4) years; 92 eyes of 46 patients with a mean age of 11.6 (5.2) years were given the Snellen Chart Visual Acuity ...

Someone with a best corrected visual acuity result of 20/200 is considered legally blind. While it's possible to have vision even more advanced than 20/20 (without a visual aid, like binoculars ...

“Which is simply not the case.” Dr. El-Hadad and Dr. Bhambra created the new chart based on the standard Latin visual-acuity chart, introduced by Dutch ophthalmologist Herman Snellen in 1862.

The doctors developed the first known visual acuity charts in Canadian Aboriginal syllabics, an alphabet used in Inuktitut, Cree, and Ojibwe. From a sample of patients at the McGill University Health ...

Visual acuity is commonly assumed to be determined by the eye optics and spatial sampling in the retina. Unlike a camera, however, the eyes are never stationary during the acquisition of visual ...