Signal26 Feb 2016
Half the world will be near-sighted by 2050

Glasses are big business – hardly surprising given that sight is our dominant sense. And with research suggesting our eyes are getting worse, the global eyewear market – set to be worth $130 billion by 2018 – could be about to get even bigger. But what's causing our eyes to fail?

Half the world will be near-sighted by 2050