Invention of “Glasses/lenses” Ngawang Tsering
Reason “why?” No visual instrument, ancient Egyptians, Greeks, Romans Prominent roman stressed resignation in old age Can’t read for himself Can’t do his daily work Turning blind slowly
Beginning “how?” 4 B.C, Roman tragedian Seneca He read books through water glass globe He got the magnification of the letter Reading stone
creation Developed glass globe into lens 1284 in Italy, Salvino D'Armate No more placing on reading material Easy to read
Importance Chinese developed it 2000 year ago Purpose, to protect eye from evil force Around the world glasses are fashion Prescribed for eyes Protective glasses at work, labs, ski, swimming, dive
Effects Invention of glasses/lenses led to many technology 1752, James Ayscough introduced his spectacles with double-hinged side pieces 1929, Sam Foster sold the first pair of Foster Grants sunglasses 1929 edwin land: polaroid sunglasses, glare-free automobile headlights and stereoscopic (3-D) photography
New development 1988, Adolph Fick thought contact lens 1948, Kevin Tuohy invented soft plastic contacts Now, lasik vision with synthetic lens
Future Might be more clear than ever More beneficial and more convenient Let’s see if it can be possible http://www.youtube.com/watch?v=5R1snVxGNVs&feature=related