The 3DS hurts my eyes

[Metrium]

I had this probleme at first. I remember my first game on the system was OoT and at first I wouldnt say it did hurt my eyes but atleast I felt an awkward pressure and sometimes I saw the screen blurry. The more I played, the longer I was able to play before I started to feel these symptomes. Now I'm totaly used to it and I can play for over an hour before I start feeling pressure on my eyes or a headache.