What are Pinhole Glasses?

Ever heard of a Pinhole Glasses. This is not a sun glasses or some sort of Designer glasses frames. This is a Pin Whole glasses. It helps you see without the need for a Prescription glasses. Looking through the tiny wholes will focus light into the pupil to make you see. Does it really work? It seems everyone who tried them said it works. Also the logic behind it makes sense. If Someone who needs glasses, make a tiny little whole with your fingers and look through it, you will noticed that its much clearer. It also said to repair the eyes, so no more eye exercises which we almost never keep up. I guess there is nothing to lose, I have to try this.