PINHOLE GLASSES SPECTACLES COME WITH INSTRUCTIONS V1

Pinhole Glasses From Japan

With instructions

Having problem with myopia, hyperopia, or tiredness because of long hours staring at computer?

Pinhole glasses may be your solution!

Pinhole glasses, also known as stenopeic 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 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. In eyes with refractive error, the result is often a clearer image, akin to that created by corrective glasses, although significantly darker, lower in contrast, and prone to flickering. Pinhole glasses reduce peripheral vision.