Posts tagged lens

Many people believe that the contact lens is a modern invention, but it is actually not the case. In fact, the origins of the contact lens as far back as the early sixteenth century. Even the modern form of contact lenses appeared decades ago. As the construction of the first principle of contact lenses, optical instruments have undergone these many changes in the hands of many different inventors and opticians. In fact, contacts awkward and uncomfortable devices have increased, glass-plastic lenses today that offer high levels of comfort, while a clear vision and clear those who have a variety of vision problems.

history of contact lens from the early sixteenth century. In particular, in 1508 Leonardo da Vinci came with the general principle of contact lenses. Although he did not create such a goal and was not necessarily concerned with vision correction, because Vinci drew and described a variety of ideas is a matter of a lens directly on the eye to help vision and change the power of the cornea of the eye.

next century, in the 1630s France René Descartes proposed the idea of a contact lens on the cornea. His idea involved the use of a glass tube with liquid placed directly on the cornea of the eye and formed, filled to give a corrected vision. In 1801 a scientist named Thomas Young, the idea of Descartes developed through experiments with an eye cup with liquid, filling the outer end containing a microscopic lens.

Even in the nineteenth century the British astronomer Sir John Herschel ideas to the vision of a filled gelatin capsule and correct a shape of the cornea. These ideas were published in a communication to the Encyclopaedia Metropolitana in 1845. Although he believes that Herschel never tested these ideas even if they have the basis for experiments and inventions, which later became the foundation of the lens shape would lead to fit the eye.

little more than 40 years after Herschel’s ideas were in 1887 FE Müller was published in Germany to use the first contact lens. Mueller was a glass blower, making the artificial eyes and could see during his contact lenses through his and could not be tolerated for a few hours at a time, there was glass and was not very comfortable. But a year later reported that both a German doctor and optician French was corrected using contact lenses for visual problems by optical defects. In fact, the German doctor, Adolf Eugen Fick, sometimes credited with the invention of contact lens. Fick develop ideas and created Herschel sclera of shells. He then mounting the lenses on rabbits, experimented on himself then. However, as contact lenses still fucking glass, they were very uncomfortable and can not be worn for a few hours at a time.

glass were so uncomfortable, they were the only type of contact lenses available until the 1930s. Then polymethylmethacrylate was first developed. This new material led to the emergence of the first lens, a combination of glass and plastic, which in 1936 introduced by an optician in New York under the name William Bloom is fine. Around 1950, an optometrist from Oregon developed the first contact lens from the cornea. Since the cornea were less than the scleral contacts, they were more comfortable and can be worn for much longer.

These developments have led to a significant increase in the use and acceptance of contact lenses in the 1960s. Over the years, several important advances have been made in relation to the production and refinement of contacts. Such a step will involve the development of the first soft contact lens. These soft lenses are available in some countries and were in the 1960s, first launched in the U.S. in 1971.

Since then placed contact lenses in improving quality and comfort and some new types of lenses were also developed. For example, toric contact lenses were initially designed for use in the United States in 1978 and the first gas-permeable rigid lenses approved to market in 1979. Bifocal contact lenses and tinted contact was available in the 1980s while the 1990s saw the introduction of day-and UV-absorbing lenses.

Obviously, the contact lens has a long history and many significant advances in recent decades have been made. In fact, now, people with astigmatism and see many other types of eye diseases and vision using contact lenses, clear and comfortable. Contacts are also becoming more affordable and are made of many discounters like CoastalContacts.com. Given the history of contact lens, advances in design and production is expected to continue to occur on the production of contact lenses have excellent option correctly all types of vision problems.