Do you know how your glasses improve your vision? Find out with this video!
The first glasses appeared in Italy at the beginning of the 13th century. Today we use glasses not only as a method of eye vision correction, but also as a fashion accessory. Let's find out more about glasses, their history and the way they work!
And here are 7 little-known facts about glasses:
#1 In Africa, glasses are extremely expensive
In some African countries, average people have to spend their three months' salary to buy a pair of glasses!
#2 Most "glasses" today are actually made of plastic
Plastic makes spectacle lenses lighter and prevent them from breaking.
#3 Reading in dim light is not harmful to your eyes
Yes, it's a myth. Proper lighting only makes the process easier, but its reducing doesn't damage one's eyesight.
#4 Approximately 25% of the world's population require eyeglasses!
6 out of 10 people in the developed world wear glasses or contact lenses.
#5 The reading stone - a great-grandparent of glasses
This was a vision correction device used in 1000AD! The reading stome looked like a thin glass sphere and wasn't simple-to-use at all!
#6 People used to believe that wearing gold earrings would improve their vision
Sailors wore lots of them to have a perfect vision they needed while navigating! Today this superstition sounds super strange...
#7 Our brain can correct our vision
If you wore glasses which flipped images upside down, your brain would adapt and correct your vision in a few days, so you would see everything the right way up.
More about science on QuizzClub:
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- Find out why humans may have already reached their maximum lifespan
- 5 awesome science experiments you can do with your children at home
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