contact lenses

By natalia_1999
  • 2017 BCE

    opinion

    In my personal opinion the contact lenses shows the
    technological advances. At the beginning the contact lenses were made of glass and were rigid, now they have different kinds, some of them are made of rigid plastic and others are made of soft plastic. thats why I think that this is an amazing invention which helps to improve the human life.
  • 2017 BCE

    Glosary

    Contact lenses: A small round piece of thin plastic that you put on your eye to help you see better.
    Cornea: Is a clear layer of the eye that covers the pupil and iris.
    Iris: The round coloured part that surrounds the pupil of your eye
    FDA: Food and drug administration.
    Pupil: The small round black area at the centre of the eye.
    GP: Gas permeable.
    Glass: A hard, usually transparent substance.
    Eye: Organ on the face that you see with.
    Disposable: Made to be thrown away after use.
  • 2017 BCE

    Bibliogaphy

    (http://www.contactlensdocs.com/contact-lens-history)
    (http://www.allaboutvision.com/contacts/faq/when-invented.htm)
    (https://www.1800contacts.com/connect/articles/da-vinci-disposable-history-contact-lenses)
  • 2002 BCE

    Silicone-hydrogel contact lenses first marketed

  • 2001 BCE

    A new concept in extended wear (continuous wear up to 30 nights) was first approved by the FDA in the United States.

  • 1996 BCE

    Disposable lenses featuring UV filters are introduced in the U.S.A

  • 1992 BCE

    The first colored disposable soft lenses are created

  • 1991 BCE

    Frequent-repleacement soft lenses are sold for the first time

  • 1987 BCE

    GP contacts available in next-generation fluorosilicone acrylate materials

  • 1981 BCE

    After FDA approval, the first contact lenses suitable for extended and overnight wear are sold

  • 1978 BCE

    Introduction of GP contact lenses

  • 1971 BCE

    Bausch and Lomb introduces the first commercial soft contact lens

  • 1961 BCE

    Czech chemist Otto Wichterle invents soft contact lenses

  • 1948 BCE

    Plastic contact lenses designed to cover only the eye's cornea

  • 1940 BCE

    corneal contact lenses are sold commercially for the first time

  • 1939 BCE

    Contact lenses first made from plastic

  • 1887 BCE

    Adolf Eugen Fick, a German physiologist, creates the first successful contact lens

  • 1887 BCE

    F.E.Muller, a German glassblower creates the first contact lens manufactured from glass, and fitted to cover the entire eye

  • 1823 BCE

    British astronomer Sir John Herschel conceptualizes practical lens design

  • 1801 BCE

    Thomas young creates a corneal contact lens to correct his own vision, he worked from Descartes idea

  • 1685 BCE

    Philippe de la Hire creates drawings that ilustrate how a concave lens placed on an eye could sned light into the retina

  • 1636 BCE

    Rene Descartes writes dioptric, in which he explains his theories on light and vision and proposes the idea of a corneal contact lens

  • 1508 BCE

    Leonardo da Vinci illustrates the concept of contact lenses

    Da Vinci first has the idea of placing a corrective lens directly into the surface of the eye and made sketches of this idea