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Contact Lens History Lesson |
Contact Lens History is an intriguing matter that arouses
much
interest. No wonder, to be honest. People want to know what they buy,
what other alternatives are possible, and what the initial springs of
the contact lens history were.
There were a lot events that hastened humanity to contact lens
developing. The knowledge about eyes were rather poor some 5 hundred
years ago. But distinguished scientists and researches did their best.
Thus they advanced the understanding of an eye and vision
consequently. The first person who took interest in the modern
principle of contacts was Leonardo da Vinci. A bit later
Descartes made the first attempts to improve vision. But his
idea
was difficult to realize because it was impossible for a person to
blink with an appliance that he invented.
A lot of efforts occurred, but neither of them succeeded until 1887
when the first scleral contacts were made and inserted. Rabbits wore
the lenses, then Adolf Fick himself, and finally some
people volunteered to join the experiment. The
lenses made
by Fick were large and very inconvenient to wear more than several
hours a day. But the key step was taken and then the contact lens
history got its origins. In such a way began the evolution of contacts.
In 1950 the first corneal lenses were produced, they were much smaller
and the duration of wearing was extended to some 16 hours a day. But
the kind of contacts had a great disadvantage that was no oxygen
transmission to an eye. Then oxygen permeable lenses (RGP) were
invented with solving the problem. Though lenses were still hard.
An impressive change in the contact lens history was made by Otto
Wichterle who produced soft contacts. Another important launch took
place in 1999 when the first silicone hydrogel were used.
Now some twenty million Americans wear contacts, above thirteen
Japanese prefer contact lenses to glasses. Eye care professionals are
sure that soon even more people will begin wearing lenses because there
are a lot of types
to any taste.
Contact lenses have made
history.
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