Modern Pinhole Glasses

By: Mike Lamb

Pinhole glasses are eyeglasses having a perforated plastic sheet in place of a lens in a general spectacle. A series of pinhole-sized perforations are made in the sheet whish allows the vision through them. Such type of glasses is also known at Stenopeic glasses. These work on the principle of a pinhole camera. The pinhole-sized perforations allow small narrow beam of light to pass through and results in a clearer image. Also the amount of ultraviolet light is reduced by this.
There are numerous companies now a day to offering these products. They claim permanent improvement to eyes with errors. Certain exercises are also recommended with these pinhole eyeglasses. They are also named natural alternative to prescription eyes. However these claims have not been based on some scientific evidences.
Pinhole eyeglasses have not become very popular as many people don't know about these or have not heard of them. A lens fitted glass is considered to be the only solution for any kind of eye or vision problem. However the awareness is growing with time.
Pinhole glasses have many advantages with respect to traditional lens fitted glasses. They are very cheap, results a clear image, causes no blurring and reduces the eye strain. The images are found sharper without pincushion effect around the edges.
Pinhole glasses have been modernized these days. A mirror coating is given on the outer surface to enhance its looks. They are available in a lot of variety, sizes and looks. Traditional pinhole glasses have flat or curved plastic sheet with perforation in it. Modern pinhole glasses use the same plastic which is prescribed in lens fitted spectacles. The perforations are made on it. They are claimed to give full ultraviolet protection. A mild mirror coating is applied on the front surface. Pinhole pattern is printed on the rear side (towards the eyes) of the eyeglass but is invisible from the front. This preserves its looks.
Though pinhole glasses are found useful for defects of farsightedness and nearsightedness, they are not recommendable for vision defects of 6 Diopters or more in myopia. They are not useful or rather should not be used during driving or doing some critical jobs like working in machinery.

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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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