Pinhole glasses are a method employed by Ophthalmologists to detect vision problems and prescribe eye glasses to people. Pinhole technology has been used by doctors to correct vision problems It is believed that if a person having vision problem is able to view an object through the pinhole more clearly as compared to without the pinhole, then the person will benefit from the use of eye glasses.
Modern glasses which use lenses to improve vision and correct eye problems, pinhole glasses do not use any lenses. They work on the premise of allowing only limited number of rays so that those rays would form a clear image on the retina. So these glasses do not have side effect and do not cause any harm to the eyes.
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