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Transcript of Eye Glasses
Hydrophobic to take away the need of drying them after they get wet
Ability to pop out easily for cleaning
Easily replaceable legs
Lenses that can pop out and be put onto goggles and 3D glasses
Doesn't show finger prints
Legs that can be easily tightened
Those that have poor eyesight can function just as well as everyone else
More than 125 million wear glasses on a regular basis
People began wearing eyeglasses around 1200 A.C.E.
No one knows when or by who they were invented
Eyeglasses addressed the need to see when doing work that requires precision and reading
In the beginning they were only worn by nobles but as books became popular and cheap more and more people had them
Materials originally used
Formed from two primitive convex shaped glass/crystal stones mounted on leather and wood
How glasses were originally made
Reading stones made of solid glass that was put into hand-held, single lens-type frames
Made of horn or wood.
shaped like two small magnifying glasses
Set into bone, metal, or leather mountings
Balanced on the bridge of nose.
New frame color
New lenses types; polarized,hypoallergenic
Different frame material; More design
Able to block the sun
To help reading easier
Be able to see
To block the sun
Less accidents from blinded drivers.
People to Use Glasses
Individuals who have vision problems, EX:
Myopia (nearsightedness) / Hyperopia (farsightedness)
People with sensitive eyes; sun glasses.
Introduction To Engineering
Eye glasses evolved over time.
Originally made from glass/crystal, now plastic
Originally made to assist in vision
Worn for fashion
Glasses help you see better, will continue to evolve for many more years.