Sky is investigating its 3D TV following claims viewers feel queasy when they watch it. The broadcaster, which launched Europe's first 3D television channel last year, has started an investigation to get to the bottom of the problem.
It follows claims of dizziness and disorientation as well as headaches and double vision. Karen Sparrow, from the UK Association of Optometrists, said: 'The short-term effects of watching 3D are the same for adults and children and could include, in extreme cases, headaches and double vision.
She said even when you stop watching 3D your brain is creating a form of binocular dysphoria, which can last a few seconds but perhaps for longer.