Pinhole Glasses: Your Multi-Purpose Eyewear
Pinhole glasses may look like ordinary sunglasses until you take a closer look. Instead of being outfitted with glass lenses, these special glasses feature an opague metal or plastic material which has been punched full of numerous small holes. Pinhole glasses have been used by many individuals as a health device to improve their clarity of vision.
An individual usually winds up wearing prescription eyeglasses for vision improvement because the improper way that light bends as it enters their pupil causes myopeia (nearsighedness), hyperopia (farsightedness) or presbyopia (dimished focus of range caused by age). Looking through pinholes instead of regular lenses, however, reduces the width of light rays that actually enter the eye�s pupil. Because the amount of light that improperly bends is greatly reduced and only the central part of a person�s pupil is receiving light, an improvement in clarity and sharpness of vision results. This same principle has been used for decades by people in Alaska, who often wear eyeglasses with slits that successfully cut down the amount of glare from the abundant snow and ice in the environment.
There are a number of benefits to using pinhole glasses to improve your vision in preference to prescription lenses. Because these glasses can improve visual acuity at all distances, they can replace bifocals and trifocal eyeglasses for close-up reading as we age. These special glasses never need changing like prescription glasses, are suitable for all ages and cannot be scratched like glass lenses. They provide a multi-purpose eyeglass which can be worn to improve vision when reading, watching TV or looking at things at a distance. They are excellent for reducing visual tiredness when doing computer work, can be used as sunglasses, can improve vision for anyone who has had eye surgery and is affected by glare, starbursts or halos appearing around lights and they have proven effective at helping people with cataracts see more clearly.