The Development Of Eye Glasses

Eye glasses early spectacles had convex lenses that could correct both hyperopia (farsightedness). Later, Nicholas of Cusa found the benefits of concave lens treatment of myopia (nearsightedness). However, until 1604, Kepler, in his paper published in optics and astronomy, in which the correct interpretation, why convex and concave mirrors to the correct presbyopia and myopia.

An unpopular aspect of glasses is their inconvenience. Even through the creation of light frames such as those made of titanium, very flexible frames, and new lens materials and optical coatings, glasses can still cause problems during rigorous sports. Visibility can be significantly reduced by becoming greasy, trapping vapour when eating hot food, swimming, walking in rain or rapid temperature changes (such as walking into a warm building from cold temperatures outside). Scraping, fracturing, or breakage of the lenses require time-consuming and costly professional repair, though modern plastic lenses are almost indestructible and very scratch-resistant.