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Pinhole Glasses

By Troy Bedinghaus, O.D., About.com

Updated: June 10, 2008

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

Definition: Eyeglasses with lenses that consist of many tiny holes filling an opaque sheet of plastic. These "pinholes" block indirect rays from entering the eye, thus preventing them from distorting your vision. While this does not actually improve the focusing ability of the eye, it does reduce the size of the blur circles so that reasonably clear vision may be achieved.
Also Known As: Stenopeic glasses
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