Earlier people were bound to carry their spectacles everywhere if their eyesight was not so accurate but now people are using contact lenses not only for getting right vision without use of any spectacles but also for style. It is actually a lens—a medical device worn on eyes for the purpose of getting correct vision or for therapeutic reasons.
The main idea of contact lenses was suggested in 1508 by Leonardo Da Vinci in his book ‘Codex of the eye, Manual D’ but it was Adolf Gaston Eugen Fick, a German ophthalmologist, who created and fitted first time successfully the contact lenses in 1887 but these lenses could be worn only for few hours; so later, several scientists worked from time-to-time to make it more convenient to use for a long time, and finally the result we have in hand. Now plastic lenses are also available worn with ease.
