News: Smartphone overuse may 'damage' eyes, say opticians

Many professionals, as opticians, warn of long-term damage caused by overuse from computers, phones, televisions... All these devices have a blue violet light that is hazardous and toxic for our eyes, although it's good to help regulate biological clock. In fact, many surveys diagnose that we have certain dependence to these devices and this induces a lot of problems. 

Above all, my view is that we are very connected to technologies and for this reason, as expected, there are many problems nowadays related with our vision or nervousness. In short, we should control us more and not depend so much on devices. 

It's here: http://www.bbc.co.uk/newsbeat/26780069