Nintendo 3DS Is Causing Some Headaches, Nintendo Responds

If played for too long, the Nintendo 3DS can literally cause minor headaches for some people. It seems that it's only a matter of taking a break and letting your eyes rest if you feel any strain. Furthermore, Nintendo UK Representative, Robert Saunders has released a statement about the potential symptoms:

""We have shown Nintendo 3DS at multiple events around the world to literally hundreds of thousands of people and have received very few negative comments. As with anything that requires focus, from reading to staring at a computer screen, taking breaks frequent breaks is always recommended. 

When viewing any kind of 3D images (TV, movies etc.), some people might experience minor discomfort. The effects are short term and have no lasting effect, in fact most players can continue after taking a short break. The Nintendo 3D was designed with a 3D depth slider that lets users adjust the 3D effect to a level that suits them for optimum enjoyment." 

 So taking a break can alleviate any headaches/other symptoms you may be experiencing when using the 3DS. It also seems that you may try adjusting the 3D Depth Slider to find a level of 3D that's comfortable for you to use.

Source: 1UP