I gathered from this article that they're referring to people that play extremely long (compared to standards of decades ago) periods and strain their eyes.
Before even going outside, reading a paper book in well lit environments could be a helpful break.
Nintendo Reveals New Wii U Footage and Details for The Legend of Zelda, ...
Various details revealed, and Star Fox confirmed for pre-Zelda release
Resolution Doesn't Matter With 2D Games, Says Hyper Light Drifter Developer
"I don’t think anybody actually cares about this with 2D games"
Aiko Chihira, il robot di Toshiba che assiste anziani e disabili
Durante la fiera Ceatec che si è tenuta a Tokyo nei giorni scorsi, Toshiba ha presentato al pubblico Aiko Chihira, un robot dalle sembianze
Preview: Felling Titans in Monster Hunter 4 Ultimate
It's about to get bloody
Mario Kart 8 Speeds Past The Two Million Copies Sold Barrier In Less Tha...
Wii U hardware sales are up, too
Digital Foundry Pins Down Mario Kart 8's Resolution and Framerate
No, not actually native 1080p
50 Unity games 'waiting in the wings' for Wii U, says Nintendo
The finest quality video game news, criticism, streaming and podcasting, made the old-fashioned way.