Pinhole glasses, also known as stenopeic glasses, vision correction glasses, peforated glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera, each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the retina and increases depth of field.
These glasses consist 2 parts: Frame and the lens. Frame has made from acetate and has dimensions: 5.3″ wide,
5.5″ long (135 mm. x 140 mm). The lens made from Nylon with hole size 1.1 mm. and Space between holes 2.5 mm. Weight is about 1 ounce