Corrective Lenses Holly Shafer TEED 1103 Prof: Carter Technology Assessment.
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Transcript of Corrective Lenses Holly Shafer TEED 1103 Prof: Carter Technology Assessment.
Corrective Lenses
Holly ShaferTEED 1103Prof: CarterTechnology Assessment
Origins Rome- 100 B.C.
Glass bottle filled with water Reading stone- 1000 A.D. First spectacles were made between
1268 and 1289 Quartz lenses held together by wood,
bone, leather, or metal
Problems: How to keep them on
Spain- 17th century- ribbons of silk China- ceramic & metal weights Edward Scarlett of London- 1730
Ridged side pieces James Ayscough- 1752
Double hinged side pieces Silver Spectacles
Evolution of corrective lenses Concave lenses- 16th century Monocle – early 18th century Bifocals: Benjamin Franklin- 1870s Scissor-glasses – 18th century Lorgnette – 18th century Pince-nez – 19th century
Materials: Glass Plastic- 1940s Hi-Index Polycarbonate Trivex Aspheric
Anti-reflective Coatings
Scratch-Resistant Coatings
Ultraviolet Treatments
Polarized Lenses Photochromatic
Lenses
How do corrective lenses work?
Modern Corrective Lenses Styled frames made of different
materials- plastics, metals, composites Contact lenses:
Vision correction As an accessory
Surgery: LASIK
PRK/ASA Implanted contacts
Social Impacts 14th century Europe
French Partisan aristocrats Spain Bifocals Monocle
WWI- German Military
~Benefits that you are not aware of~
Negative impacts on society: Visual distortation
Extremely poor vision Name calling
Impacts on culture & society 1456 - Gutenberg's invention of the
printing press 1841- Andrew Jackson 1879 - Thomas Edison's light bulb 1926 – Television Computers
Timeline
Weighing in on the:Negative Benefits
Temporary solution
Prevent self healing
Eye strain Social stigma
Positive Benefits
Improved vision Read books Read from afar Drive