The advertisement for pin-hole glasses reads like a miracle. By using this product for just 30 minutes a day, you can supposedly improve your vision and throw away your eyeglasses or contact lenses.
This device, which looks like a pair of sunglasses, is an opaque disc dotted with rows of pin-holes. Its unique design can supposedly cure astigmatism, double vision, photophobia (sensitivity to light), and cataracts.
Testimonials abound about the product. One user claimed that after 20 minutes of using these spectacles, he could see perfectly and read signs across the street without eyeglasses.
A pair of pin-hole glasses is expensive which is probably a small amount to pay for those who desire to see clearly again. After all, dramatic results are hard to come by with conventional eyeglasses. Should we believe its promoters?
The idea behind pin-hole glasses is not new. It was known centuries ago and was used before the advent of glass lenses. The reason they work is simple.
“Light passing through a small hole (or holes) is restricted to rays coming straight from the viewed object; these rays do not need focusing to bring them to a point,” according to Drs. Russell S. Worrall and Jacob Nevyas in “The Health Robbers.”
Just look through any pin-hole and you’ll see what they mean. When you do this, blurred images become focused. This is because the amount of peripheral light rays (which are responsible for blurring) is reduced. With appropriately spaced multiple pin-holes, you’ll get clear straight vision without the difficulty of concentrating on a single hole.
But there are problems with this system. First, lateral vision is compromised. You can see clearly straight ahead but side vision is blurred and distant vision is dim. Multiple images may also form and confuse you.
“Monocularly, one could achieve a legible single image with appropriate adjustment of head position. When the second eye is opened, one cannot be certain that the pin-holes before that eye will be centered for that head position. As a result, one may get a single image in one eye but a doubled one in the other,” wrote Dr. Sidney Wittenberg in “Pin-hole Eyewear Systems: A Special Report” published in the Journal of the American Optometric Association.
“Modern promoters claim their products are better than conventional lenses. Actually, both reduce the focus effort needed to read, but pinhole glasses are much less useful because they restrict contrast, brightness, and the field of view. Worn as sunglasses, they can even be harmful because the holes allow damaging ultraviolet rays to reach the eye,” Worrall and Nevyas added.
Those who have benefited from pin-hole spectacles are, more often than not, people who wear the wrong eyeglasses. Naturally, replacing these with pin-hole glasses will make them see well.
If you don’t need eyeglasses but simply use them to improve your appearance or to hide those ugly eye bags and dark circles, switch to Eyevive instead. This powerful cream will revitalize your eyes to make you look young again. For details, check out www.Cheapglasses123.com