According to a report from NPR, studies on the 3D effects do not provide enough data to support whether how much long-term damage the device could cause to children. NPR believes (along with various vision scientists) that some game developers will urge young children to not use the handheld's adjustable 3D mode. The same concern of eye-strain and vision problems was brought up to parents during the release of the Virtual Boy in 1995, and we all know how that turned out.
Now, the question remains whether or not this health concern will have any effect on the 3DS' early sales. If so, how will Nintendo correct this problem?