A recent scientific study in the Brien Holden Vision Institute, Sydney, Australia. Has assumed that half of the entire world will become nearsighted in 2050 due to changes in daily life such as working indoors and electronic usage. The study started in 1995 with 2.1 million participants. The results showed that pretty much of 25% the entire world has myopia (being nearsighted) and by 2050, 50% of the world's population will have myopia due to staring at your phone/computer/TV all day. Since we don't know what the future of electronics has in store for us, then they could potentially blind humans.
So get ready to save for glasses soon if you stare at your TV all day! if you want to know more about this then check out http://www.fastcoexist.com/3056862/half-the-world-will-be-short-sighted-by-2050. Also remember this before you watch Netflix next time, not easy being blind like this dude to the left.