Can help promote good vision habits. Eliminates stress and headaches caused by glasses. Activates your natural vision ability. Pinhole Glasses are like sunglasses but with a grid of tiny holes. They are a cheap and easy way to help correct poor vision when worn for only 15-20 minutes They also help reduce heart-rate, headaches and tension from eye strain. HOW DO THEY WORK? Pinholes work by cutting down scattered light into parallel beams that fall on the keenest area of sight on the retina (macula). They reduce the blur circle on the retina, allowing clear vision. Your brain becomes accustomed to the overlapping dark grid and does not notice it after a time. Pinhole Glasses can be used for computer, reading, TV, movies, and all distance vision. However, they are not a substitute for doing the vision games.