How can the same pair of glasses work for anyone?
The same set of lenses correct blurry vision for anyone because they work by directing light rays onto the retina at the back of the eye and not through the use of an artificial lens. The pinhole principle has the same effect on every eye, regardless of the type or degree of vision correction required. • How do Pinhole Glasses work? For a person to see images clearly, the light rays entering the eye must come to a focus on the retina at the back of the eye. People who have blurry vision, for whatever reason, cannot see images clearly because the light rays entering the eye focus either in front of the retina or behind it. The pinhole lenses work by letting into the eye only the rays which pass through the center portion of the pupil, blocking out all the rest. It produces a slightly darker image, but all of the light rays entering the eye focus directly on the retina. There is no blur, just a clear, focused image. • Who do Pinhole Glasses work for? Almost anyone who has blurry vision c
