Eyeglasses
Eyeglasses are corrective lenses mounted in frames that help those with vision problems see clearly. The lenses are shaped in order to bend light rays so that they will focus at the back of...
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The Invention of Spectacles
Overview
The human body has evolved in a rough and ready response to environmental demands. The eye is no exception to this rule, for very few people have perfect vision. T...
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Eyeglasses
The Invention of Spectacles