
The first actual documented case of eyeglasses was during the 
thirteenth century, by Giordano da Pisa [Jordan of Pisa, Italy]. 
However, as he chose to keep the invention to himself, roughly twenty 
years later, a colleague of his, Alessandro della Spina of Pisa 
recreated the new novelty and shared them with the world. Another 
"father of optometry", leading the way for the creation of glasses was 
Roger Bacon. However, long before Bacon started his experiments 
magnifying bits of glass for lenses, or it was presented to the Italian 
public, traces of early optical experimentation are known to be from 
early Chinese, and ancient Egyptian civilizations. Many took gemstones, 
water, and of course glass, to bend, twist and shape light to better 
effect the eye. However, it wasn't until the thirteenth century that the
 concept of prescription eyeglasses came to play. There is also new 
evidence that shows China did a lot of importation of glasses during the
 fifteenth century.
 

The next several centuries solidified 
eyeglasses as a proper tool of vision correction. The times of having to
 hold the lenses up to one's eyes were long gone, and the typical design
 at this time would fold at the bridge [unlike our current design that 
allows arms to wrap around our ears]. This caused a lot of arched necks 
for the glasses-wearers of the time period. As time went on, the models 
became more user-friendly in the eighteenth and nineteenth centuries - 
particularly once arms were presented. The glasses frames started to be 
marketed more, and therefore practical needs were addressed, such as 
size and weight.
 
The styles for eyeglasses frames during the 
twentieth century were the turning points to the style of the time 
period. The 1920s allowed for a concession of glasses, whereas frames of
 that time period were perfectly applicative to the "flapper girl" style
 of the era. The style drastically changed in the 1950s, with the rise 
of the angled corners we now refer to as the cat-eye style. The fifties 
and sixties brought out larger plastic frames in the coveted wayfarer 
style, before the 1970s brought back square edges. The 1980s and 
nineties focused primarily on awkwardly fitting clothes, colors, and of 
course... glasses. The Sally Jesse Raphael glasses became all too 
popular, and just as quickly, met it's demise. It has not been until the
 twenty-first century that eyeglasses have started the recycling phase. 
While new developments likely continue, most of the styles remind us of a
 different time, from the past.
The evolution of prescription 
eyeglasses has grown insurmountably since they were first invented 
centuries ago. Just as many technological advancements, corrective 
eyewear keeps getting smaller, and even more convenient. They went from 
heavy, cumbersome objects, to intricate optical corrections, such as 
multifocal glasses, contacts, and even surgeries to restore vision 
needs. Of course we do not know where research will take us, and can 
only expect even better options in the future. This was the current 
evolution of eyewear.
 
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