Technologically speaking, we've really progressed in the last couple of years and now, it seems hard to find someone who isn't on some sort of mobile device. In truth, these devices are wonderful, because they allow us to stay in touch with whoever we want no matter where we are. However because these devices have small screens, a lot of people often hold their smartphones much closer than they would hold printed materials. Reading off handheld devices can often create a whole set of problems for your eyes.
Because everyone holds smart phones so close, our eyes end up working overtime, just to focus on text and images. This can cause issues, not least for people who already have vision correction such as glasses or contact lenses. If you already wear glasses, holding your phone or tablet too close can make it even harder for your eyes to correct for distance. Your eyes strain, and you end up with headaches or migraines, which aren't pleasant.
But that's not all. Holding your screen too close can make you blink less, and this can lead to dry eyes and make it harder to see clearly.
In order to stop eyestrain and blurred vision resulting from the use of handheld devices, it's best to set your phone to display all text in a larger font, and hold the screen further away from your eyes. It's also recommended to try using your phone in shorter increments, and letting your eyes have regular breaks. Being smart about your smartphone will protect your eyes.