Objective To investigate the effects of posture and level of exertion on dynamic visual acuity (DVA; visual perceptual processing task) in athletes with and without history of sport-related concussion ...

Visual acuity (VA) commonly refers to the clarity of vision, but technically rates an examinee's ability to recognize small details with precision. Visual acuity is dependent on optical and neural ...

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 ...