Sony has updated its terms of service to include information about potential health risks to children posed by 3D stereoscopic games.
"The vision of young children (especially those under six years old) is still under development," the updated document explains.
"SCEA recommends that you consult your doctor (such as a pediatrician or eye doctor) before allowing young children to watch 3D video images or play stereoscopic 3D games. Adults should supervise young children to ensure they follow the recommendations listed above."
The new terms also mention eyestrain, fatigue and nausea as potential side effects of prolonged exposure to 3D imagery and advises regular breaks.
Earlier this year Nintendo's Satoru Iwata said that the upcoming 3DS handheld had a 3D off switch partly because of the potential ill effects on young children's eyesight.
Then again, virtually every videogame these days comes with a health and safety warning as a precautionary measure, so Sony's terms of service update isn't that special.
To pick a game at random, the copy of New Super Mario Bros. Wii on our desk this morning mentions seizures, repetitive strain, eyestrain and motion sickness as possible side effects of prolonged play. Sounds like a good night out.