of making 2 cristal stones, and to put 2 iron thics within them so humans could hold them with their hands, since then the glases have been revolutionazing the ones we now have. Glasses are very important to all people who have problems with their vision. Glasses are very helpful to get a better vision, in some cases they help to look far, or to look near, it depends on the problem that each person has. The lens has a line through the optical center of the eye that helps to clear the secondary…
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