Lens Germany
The History Of Contact Lenses
Contact lenses are mostly believed to be a recent invention, which embodies the modern technology, however, the fact is that contact lenses have come into being in the mid 1930’s and the conception of contacts emerged as early as 1500s. It is a long of history of contact lens, and here below is a brief introduction to its history.
In 1508, Leonardo da Vinci sketched and described several forms of contact lenses, he once had written his idea of contacts in his Codes of the Eye, expressing the idea of putting a lens directly on the eye so as to correct the vision. However his idea was merely based on the practice of using a bowl of water to correct vision. Thus many scholars nowadays argue that Davinci was merely observing the function of the eye.
In fact, it was not until 1950s, an Oregon optometrist, George Butterfield designed a corneal lens, the inner surface of which follows the eye’s shape instead of sitting flat, the shape similar to the modern contacts.
The lenses at that time were made from glass, which were heavy and could only be tolerated a few hours at a time. Zeiss, a Germany optical company in the 1920s was the first company together with another Germany company that invented the glass contact lenses.
In 1936, a New York Optometrist William Feinbloom introduced the use of plastic rather than glass to make hard plastic contact lenses, before which the combination of both plastic and glass had also been applied since then plastic contacts lenses became popular, especially after a corporation named the Rhom and Haas Compny which had created a malleable substance called polymethylmethacrylate (PMMA), a clear plastic that would be the foundation of contact lenses for forty some odd years.
Later, many changes had been made to contacts, Georage Butterfield was the one who, basing on the previous conceptions, made contact lens far easier to wear and easier to manipulate.
However, all in all, hard lenses were uncomfortable to wear, and various eye infections are easy to emerge.
Hard lenses decreased in popularity when Czechoslovakian polymer chemist Otto Wichterle and his assistants Dr. Drahoslav Lim produced the first soft contact lenses in 1950. In 1972 Bausch and Lomb took the concept and created the first soft contact lenses.Soft contact lenses were more pliable and comfortable to wear. With soft contact lenses, the possibility or eye infection of the wearers decreased greatly.
On the other hand, there are also disadvantages that soft contact lenses are hard to use and are easy to get lost.
As modern technology in contacts advance, contact lenses are created to treat various kinds of eye conditions, including that were once difficult to treat without glasses. The Torics and Bifocal lenses are good examples. Torics are designed to treat astigmatism while bifocal lenses are designed to correct problems that were assisted by horrendously thick eyeglasses once upon a time. Nowadays, contact lenses can even be used for cosmetic purposes and for eye color enhancement. Therefore, high-tech indeed brings us great deal of benefit.
It is estimated that there are 35 million people in the United States who have opted for contact lenses over the use of glasses because of their convenience and cosmetic value. Therefore, contact lenses are a mainstay for vision correction. Although many people initially feel discomfort when starting to use contact lenses, but the benefit outweigh those minor discomforts.
However, contact lenses should also be regarded as a medical prosthesis, and precautions and safeguards must still be understood by everyone and not only the wearer of contact lenses. The best way is to consult your eye doctor.
If you want to know more about contact lenses knowledge, then feel free to visit http://vision.firmoo.com/contact-lenses
About the Author
Firmoo.com is the fastest growing online community selling high quality yet cheap eyeglasses, cheap prescription sunglasses online and other eyewear. Firmoo’s return and refund policy makes your purchase with Firmoo risk-free.
Friends of the Lens 03 – German photographer Ingo Arndt | euromaxx
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Contax C/Y Zeiss 35 1.4 AEG 35mm f1.4 Germany Lens $925.00 |
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Schneider 67mm Slip-On Lens Cap Made in Germany $4.00 |
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mint B+W 52mm UV PROTECTIVE LENS FILTER made in Germany 52E 010 1x nikon canon $25.00 |
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KODAK (GERMANY) 620 MODEL C ART DECO LENS & SIDE PANEL 1932-34 (2004) $31.61 |
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Original NOVOFLEX GERMANY 42mm Push On Lens Cap M42 (36 $19.99 |
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RARE GERMAN lens PORST Weitwinkel 1:3.5/35 mm in M42×1 of West Germany $69.99 |
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Vintage Zeiss Ikon & Ceneiplan Germany 27mm camera lens 4 filter set $10.49 |
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Vintage Ernst Leitz Wetzlar Hektor Lens, f/13,5 1:4,5, Germany $279.00 |
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VINTAGE AGFA OPTIMA 1a WITH AGFA COLOR – AGNAR 1:2.8 / 45 LENS MADE IN GERMANY $149.00 |
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Leitz Focotar 50/4.5 Enlarger Lens :Back Threads are M39 – Leitz Wetzlar Germany $289.00 |
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ANTIQUE KREMP WETZLAR CAST IRON MICROSCOPE 3 LENSES GERMANY ORIGINAL WOOD CASE $250.00 |
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WWII GERMANY ZEILER MILITARY SIGNAL FLASH LIGHT CLEAR RED BLUE BLACK LENS **NR $19.00 |
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Kodak Ektapro 85mm 2.8 f2.8 Projection Zoom Lens Made In Germany with caps FF $20.00 |
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Fujinon H6X12.5R TV Zoom Lens 1:1.2/12.5-70mm made in germany 181992 $250.00 |
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Vintage ERNST LEITZ WETZLAR Germany Microscope Projection Prism Lens VGC $47.35 |
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Vintage Folding Camera Bentzin Primar Compur Lens Carl Zeiss Germany $150.00 |
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VINTAGE ZEISS-IKON BOX OF LENS FOR MICROSCOPE,GERMANY $15.00 |
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TWO CARL ZEISS CAMERAS CARL ZEISS JENA LENS MADE IN GERMANY WITH NO RESERVE $99.95 |
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Isco Optic Germany Curved Wide Angle MC Attatchment 70mm Projector Lens Minty! $995.00 |
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B+W 77MM Neutral Density ND 0.6-4X Filter Made in Germany For DSLR Camera Lenses $78.91 |
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Camera CERTOTROP 6,5×9 Germany Compur XENAR f:2,9 F=10,5cm.Lens ,old rare $249.00 |
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Contax Carl Zeiss 180mm f2.8 Sonnar T* (GERMANY) Lens $479.00 |
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ULO Tail Light Unit and Indicator Lenses Grey Rubber 350 0015 Made in Germany $29.99 |
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ULO Tail Light Unit and Indicator Lenses ULO 350 2015 Made in Germany $29.99 |
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Opel Rekord P2 Hella Brake Light Lens Red K13394 3232 BBL 870 Made in Germany $39.99 |
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Audi 100 Headlight Lens HELLA 6 104 155 Made in Germany 1446R1 Lt $49.99 |
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Opel Kadett headlight Lens HELLA Made in Germany 1102609 7063 $49.99 |
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Rolleiflex 2.8 D Model#K7D Circa:1955-56 Twin Lens Reflex W/case Germany VNC NR $399.99 |
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Vintage Rollei Zoom-Rolleinar MC 80-200mm Lens Original User Manual West Germany $9.99 |
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Rodenstock-Omegaron 135mm 4.5 ENLARGER LENS | MADE IN GERMANY $58.94 |
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Leica Elmarit R 35mm f2.8 R 50mm 2 Leitz Wetzlar Germany Lens Hood 12564 k $29.95 |
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45mm SNAP ON LENS CAP VINTAGE Made in GERMANY ORIGINAL $6.49 |
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B+W 52E 2X YELLOW LENS FILTER NIKON CANON GERMANY $11.99 |
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ILFORD SPORTI 4 AND CASE TAKES 127 ROLL FILM SUBITAR LENS WESTERN GERMANY $7.82 |
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CARL ZEISS JENA GERMANY Z AXIS SET of 4 LENS CALIBRATION MEASURES MICROSCOP RARE $199.00 |
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++(1) CANADA 1931 Postcard to Nuremberg Germany Photography Company Lens Card $0.98 |
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VINTAGE AGFA ISO FLASH-RAPID C CAMERA WITH MADE IN GERMANY ISITAR LENS $9.99 |
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TAIL LAMP Assembly GENUINE PORSCHE (No Chinese Aftermarket) fits:PASSENGER Side $159.90 |
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Taillight Assembly GENUINE Porsche HELLA Germany *Dealer sells identical Light $159.99 |
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Carl Zeiss Jena Tessar 2.8 80mm lens Germany $175.00 |
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1976 Germany Munich Ski-Glasses With 10 Lenses $4.99 |
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Praktica MTL3 Pentacon 35mm Camera w/4 Lenses – Germany – 1980’s $118.00 |
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ARRI ARRIFLEX CAMERA LENS SUPPORT GERMANY MINTY RARE $349.00 |
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THE Kodak Retina Camera Fitted Case filled with Lenses & accessories Germany ~~~ $79.99 |
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ULO Tail Light Unit and Indicator Lens ULO 37201 15 Made in Germany $19.99 |
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RARE! ISCO GERMANY CINELUX-AV 60-110MM f/3.5 (2.40-4.30″) MC PROJECTION LENS $120.00 |
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RARE! ISCO GERMANY CINELUX-AV 60-110MM f/3.5 (2.40-4.30″) MC PROJECTION LENS $120.00 |
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Vintage Kilfitt Brown Leather Lens Case, 3 1/2″ Tall, Made In West Germany RARE $39.99 |
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CONTAX 60MM F/2.8 S-PLANAR AE MACRO LENS/GERMANY/MINT/1:1/ ADAPT DIGITAL BOXED $902.49 |
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VINTAGE OGA GERMANY 35MM CAMERA / 1:2.8/45mm Lens $39.99 |
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OEM Hella BMW Audi BENZ Xenon Headlight Headlamp HID Light D2S D1S 3″ Projectors $80.99 |
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BIOMETAR 2,8/80 Carl zeiss Jena good condition Germany lens Pentacon six $149.00 |
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Leitz Leica R 180mm Elmar-R f/4 Lens 3 cam / Germany – 1985 $480.00 |
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B+W 77MM Neutral Density ND 3.0-1000X Filter Made in Germany For DSLR Lenses $157.82 |
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WELTA WELTUR 6×6 Carl Zeiss Jena TESSAR 1:2,8 F=7,5 cm Lens Old rare Germany $299.00 |
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B+W 77MM Neutral Density ND 1.8-64X Filter Made in Germany For DSLR Camera Lens $147.96 |
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Leica Tele-Elmarit-M 90mm 2.8 Type 2 Lens Made In Germany CLA’d $1,499.99 |
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Kenngott German Camera Stuttgart Germany plate film folding Carlzeiss Gena lens $89.95 |
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New Genuine ISCO Gottingen 75mm F4.5 Schneider Iscorit Enlarging Lens Germany $9.00 |
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LEICA 135MM F4.5 HEKTOR M LENS (GERMANY) $99.00 |
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Vintage 80s Jaques Duval sunglasses matt blue graduated lens West Germany WOW $18.18 |
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1954 Leica Summarit-M Mount 50mm Leitz Wetzlar Germany Camera Lens w/ UVA Filter $590.75 |
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Leica Leitz Summicron R 35mm f2.0 Lens – Germany $499.00 |
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KILFITT GERMANY 135MM PRIME LENS 35MM FORMAT ARRI MOUNT GH2 PEN RED DSLR ZEISS / $1,325.25 |
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ROWI GERMANY CAMERA / LENS SUPPORT SYSTEM GH1 PEN 5D 7D DSLR ARRI SACHTLER RARE $219.00 |
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KILAR MACRO ZOOMAR 300MM LENS ARRI MOUNT GERMANY LUMIX PEN EOS RED DSLR LOOK! $1,895.25 |
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RODENSTOCK HELIGON PRIME LENS 83MM F2 MADE IN GERMANY FOR ARRI 35MM VERY RARE $1,995.00 |
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Traffic Signal Light Lens – Yellow – 12 inch/150W – DESAG (Germany) – Lot of 4 $35.00 |
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CARL ZEISS Planar 50mm Lens F/1.8 Rollei QBM * West Germany * PLEASE READ!! $27.00 |
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Vintage Pair Prescription Sunglasses Germany Bi Focal Lens LOVELY $29.95 |
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CARL ZEISS Distagon 25mm LENS F/2.8 Rollei QBM * West Germany * PLEASE READ!! $225.50 |
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CARL ZEISS Tele-Tessar 135mm Lens F/4 Rollei QBM * West Germany * PLEASE READ!! $20.50 |
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Vintage Minox Wetzlar B Spy Camera 15mm Film 1955 Complan Lens f/3.5 Germany $343.85 |
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VOSS 1:5.5 400MM PIESKER BERLIN WEST GERMANY NIKON MOUNT LENS $15.57 |
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Vintage Volkswagen Beetle Headlight Glass Lens, Bezel and Frame Hella Germany $7.50 |
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Vintage Camera Lens GERMANY ISCO Gottingen Westar 1:45/100 C $9.99 |
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CARL ZEISS GERMANY MICROSCOPE NEOFLUAR 100X 1.30 N.A. Ph3 CONT. OBJECTIVE LENS $317.50 |
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Carl Zeiss S-Planar 60mm f 2.8 T* macro lens AE for Contax SLR West Germany $449.00 |
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Rare Germany ISCO-Gottingen Ultra MC Gold Film 35/70mm lens 2/100mm 3.94″ 731.56 $238.88 |
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ZEISS IKON SUPER NETTEL+ TESSAR 3,5/5cm Carl Zeiss Jena Lens Old rare Germany $349.00 |
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///MINOX 35 GL + FLASH + LEATHER CASE/ Color Minotar lens, Made in Germany//// $85.00 |
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Carl Zeiss West Germany C 12,5x eyepiece pair okular paar lens oculaire okulare $79.95 |
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Carl Zeiss Germany C 12,5x eyepiece okular lens oculaire $44.95 |
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Carl Zeiss West Germany Kpl 16x eyepiece okular lens oculaire $79.95 |
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BIOTAR f2/5,8cm mount EXAKTA VINTAGE GERMANY LENS to LEICA PENTAX PRACTIKA ZENIT $399.99 |
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Carl Zeiss West Germany Fk 10x eyepiece photo focusable okular lens oculaire $84.95 |
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CARL ZEISS JENA SONNAR f2/5cm VINTAGE GERMANY LENS for 35MM CAMERAS CONTAX KIEV $249.99 |
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310/32 Vintage Made in Germany Camera Photograph Lens Hood VOIGTLANDER case $35.00 |
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Opel Kadett B 1971 Series Front Turn Signal Lens Right Side Front $39.95 |
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Opel Kadett B 1971 Series Front Turn Signal Lens Left Side Front $39.95 |
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SAAB 96 1960 HELLA Tail Light Lens Right Side $59.95 |
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LEICA Original Leather fitted case For leica lenses made in Germany. $66.49 |
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VTG Rolleicord TLR 75mm Camera, Zeiss Lens, Compur By Franke & Heidecke Germany $156.00 |
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Kodak Retina IF 1963-1964 Schneider Xenar 2.8/45 Lens Made in Germany $199.99 |
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Rodenstock Rodagon 80 mm f/ 4 – 22 Enlarging Lens Germany $49.99 |
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Vtg Bauer C4 Super 8 Movie Camera Germany w/ Neovaron Lens $9.99 |
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Isco-Gottingen Enlarging Lens For Darkroom Enlarger 1:4.5/75 Made In Germany $19.98 |
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Vintage Carl Zeiss Jena Tessar 1:3.5 f= 5cm Lens Novoflex Germany $9.99 |
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Meyer-Optik Primotar 180mm f3.5 Lens for Bronica S S2 S2A Made in Germany $150.00 |
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Vintage Graflex Graphic 35 Film Camera 50mm Lens Graflar G. Rodenstock Germany $29.95 |
