• Question: why do some people need glasses and some not ?

    Asked by i will troll ye to Alex on 15 Mar 2017.
    • Photo: Alex Evans

      Alex Evans answered on 15 Mar 2017:


      In the wild, animals that have bad eyesight wouldn’t be able to survive and will die before they can pass on their genes to their children.

      As humans, we’ve discovered how to bend light using lenses, and so now everyone can have good eyesight by wearing glasses, meaning that lots of people will pass on their ‘bad eyesight’ genes to their children.

      There are other reasons why people might need glasses, but in general, if your parents have bad eyesight and need glasses, then you are more likely to need them too!

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