This article actually says "smartphones" cause eye problems but most people won't click the link unless it says Apple is to blame for trying to kill you. 
- David Allamby says there has been a 35% increase in the number of people with advancing myopia since the launch of smartphones in 1997
- He believes the problem could increase by 50% in the next ten years
- The problem is so common he has given it a name - 'screen sightedness'
- 50% of 30-year-olds could have the problem by 2033 due to smartphones