Therefore, at the presentation of the 3DS, a portable console that offers games and videos without the need for glasses, Nintendo issued a press release indicating that its use by children below the age of seven could be dangerous. Samsung did something similar when it launched a new range of high-definition 3D televisions and warned of the potential damage to the health of certain users.
The Spanish Consumer and User Organisation (OCU) has asked the authorities to establish safety standards on the use of this type of glasses by children and to inform spectators on this type of precaution. However, it is not only small children who cannot benefit from this technology. People suffering a sight problem that makes vision in relief difficult would probably have problems such as headaches, dizziness and even confusion on watching this type of film.
Even people with exceptional sight could also need to learn how to see with 3D technology, a "skill" that improves with practice. This is the case because there are certain differences in the way the three-dimensional space is perceived on a screen and in real life. It is not a case of each of our eyes simply seeing a different image.
To be able to enjoy the 3D releases on offer, you can "train" this sight in line with a few simple pieces of advice, such as:
- Sit as much in the centre as possible in relation to the screen. In fact, if you are unsure as to whether you will be able to enjoy the stereoscopic film without any problem, you should go to the cinema another day rather than to sit at the side.
- Start by sitting further back than usual. A greater feeling of immersion and depth is achieved the closer you are to the screen. However, this is also the case when the brain has to make more efforts (because the separation between the image received by the right eye and that received by the left eye is relatively larger). Once you are sure you will not have any problems in enjoying this technology, sit closer to the screen than you would when watching a 2D film.
- Keep your glasses on or contact lenses in, if you normally wear them. 3D glasses should adapt to them without any trouble, and you should be able to watch the film without any added difficulties.