Have you been watching stuff on your phone in the dark?

Actually, there are numerous problems that can be occuring: Tips to Prevent Eye Strain

Have been used iPod for 2 years and half. Nothing yet.
How much you use your iPhone and how near of your face(eyes)?
Hope you get well.

This happened to me with my iPod. I got in Christmas 2010 and after using it like 24/7 I ended up needing glasses. Before it I had 20/20 vision. Now I have 20/70 according to my optometrist.

I've been an iPhone user for nearly four years now, and my eyesight has remained flawless.

I was wearing glasses before I got it so.....

I've been using an iPod Touch since January 2009 and I got an iPhone last year. My eyesight is still 20/20.

I needed glasses after getting my laptop

I've had an iPod touch since the first one, then upgraded to the 3rd gen in 2009 and my vision is still perfect.

I've had an iPod Touch for two years, then it broke & got an iPhone 4 shortly after.

It might be because of the iPhone, sometimes I feel like I'm losing some eyesight when I use it.
Sometimes ( even normally ) I blur out an object and have to force my eyesight to focus in on it.

For me it probably has to do with the fact that I love Videogames.

On a side-note, hope your eyesight recovers!

It's a mix of holding it up too close to my face and eyes, and using it in the dark that has made my vision worse.

I don't need glasses, but I can tell that my eyesight isn't as good as before

I got an ipod touch in December 2008 and since then my eyesight has gotten considerably worse. Before I had no eye problems but after my vision got so blurry I now need glasses I wonder if they're related...

Solution: get an android

Well this scares me, cause I just got an iPhone a few days ago. But I already wear contact lenses.