Pinhole Eyeglasses: An affordable and Useful Alternative

Pinhole eyeglasses are similar to regular eyeglasses but are unique in their advantages and styling. Pinhole eyeglasses are also known as stenopeic glasses coming from the Greek word for "little opening." They are composed of materials such as plastic or metal, as opposed to glass.
The concept of the pinhole effect was first described by Scheiner in 1573, and the eyeglasses work in much the same way as a pinhole camera. The depth of focus can be increased on a camera in much the same way that the glasses cause a clearer focus for the eye. Pinhole glasses are composed of many small holes in the material which reduce the width of incoming light rays. This reduces peripheral light and causes the eye to focus on only the centermost portions of light coming from an object, resulting in a much clearer picture.
At first glance, it may seem that pinhole eyeglasses would be uncomfortable to wear due to the many small holes in the field of vision. This effect is usually only noticeable during the first few days of wearing the glasses. Over a short period of time, the brain adjusts to the honeycomb effect in the field of vision. The holes are more noticeable while looking at close up objects such as a piece of paper, but the farther away an object is, the less noticeable the holes become. When watching television or looking at the horizon, you are able to see the entire view through one small pinhole.
There are many advantages to using pinhole glasses. The glasses may be used as computer glasses to reduce strain on the eyes during long periods of work, or as sunglasses. They aren't prone to scratching or fingerprint marks, and they reduce the pincushion effect of regular eyeglasses, which makes straight lines appear blurred around the edges. Pinholes improve visibility at all distances without a specific prescription, and are often cheaper and more acceptable than prescription glasses, offering an affordable and useful alternative to comparable eyeglasses. However, due to the reduction in brightness and peripheral vision, pinhole glasses are not recommended for use while driving, and one should always use adequate light while wearing pinhole glasses.

Mike has been writing and publishing articles about health products. He recently came across a website on pinhole glasses which gave information about this old technique of using pinhole glasses for eyesight correction. Here's an article about pinhole glasses.

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