3D-movies impaired health

So, cheers comrades. It has happened is what all have been waiting for, now you can be a direct participant in the action film, you can get into the thick, into the atmosphere of the film, now more and more bands are removed in a format 3d. People like, engineers have a job, companies dropping $. It seems everyone is happy. But few zadumyvaetya expense of what is achieved 3d effect and that it can actually damage health.



From nedavego time kinooindustrii there has been a boom in 3d. All go to the movies only on the volume, to watch movies such as flat as no longer cool. Companies producing monitors, TVs and video forge mass production of Home equipment for viewing volume. But nobody thinks about vozomzhnov harm. I understand that in our world is difficult to talk about something harmless, even in megapolsah air to breathe is harmful, not to mention any callback Tipo mobile. I am writing this because, firstly, I think that the damage must be minimized, and secondly, because a few people think about it. On the dangers of cell phone or computer at least once every thought, but on the 3d ...
So let's fast forward to a wonderful movie theater where the format 3d show "Avatar" any another masterpiece.

Pokumaem tickets at the entrance to the hall we have to check and issue points. We are happy to take and occupy space in the hall according to the ticket, dress glasses. And so begins the long-awaited movie. It looks like this ...

Now let's see what proisodit with our eyes while watching the volume image through such spectacles here. A small lecture on the device of our eyes. I apologize if it is a bit tedious.
The lens in our eye is a fairly important part of refractile apparatus, is a kind Liznyov. The eye as a ciliary muscle.
details:

1 - cornea
2 - lens
3 - retina
4 - ciliary muscle
5 - Zinn ligament

Ciliary muscle is used for stretching and compression of the lens, so with the lens, she plays the role of AF. When we look at the object it is stretched, compressed (played settings) and finally adjusted for best focus. This process is called akomodatsiey. In addition to her in our eyes have rangefinder, it works due to the fact we have cho 2 eyes and more or less realistically assess the distance to objects. The same brain without the participation of consciousness can evaluate information about the distance to the object from side sources.

Now the most interesting, how did all this stuff works with 3d.
The principle of the space movie is that the technical means to deceive the finder-file for different eyes Different kartinki.Tak, rangefinder deceived. But what to do with accommodation? She should leave the flat screen! But then begins the process even more interesting tug-of-the lens. Autofocus said that the object is in the plane of the screen. Distance said that the object is located somewhere far away. Consciousness believes parallax (which, like the visual analyzer, located in the cerebral cortex) and said that the object is far away. Autonomic system receives conflicting instructions and begins to go mad. Ends is that the system or simply rises to a screeching halt (disorientation), or begins to feverishly bucks (way out of the ordinary mode and as a consequence, fatigue).
As a result, during prolonged viewing 3D very quickly tired ciliary muscle (the characteristic pain in the eyes, headache). But the worst thing is not it, but that breaks longstanding friendship between the mechanisms of governance, which had hitherto always just helped each other. I do not know what it is, but I hope that in the near future physicians learn to treat this thing.

By the way, all that opacno above occurs only when viewing the 3d near. If the distance to the screen of 10-20 meters. In this case, the lens has pravlnoe position and have no problems with accommodation.
So watch stereoscopic RECOMMENDED On the back row cinema! The front rows do not sit DO!