20/20 Vision and the Psychology of Willful Blindness

20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. Visual acuity is measured by your ability to identify letters or numbers on a standardized eye chart from a given distance. About 35% of the adult population have 20/20 vision and … Continue reading 20/20 Vision and the Psychology of Willful Blindness