3 D movie bring visual effect is a very shocking, but wearing 3-d glasses for long periods of time watching movies and to us eyes caused damage, how to enjoy the movie and protect your eyes? Current 3 D movie very hot, but some of them reflect after watching the movie appear dry eyes, pain, inspect content fuzzy, even dizziness, nausea vomiting and other symptoms. Media reports, some even appeared acute attack glaucoma. Why can appear these problems? 3 D effect is how to "see" out of the normal two eyes are apart from about 5 cm. Two eyes in addition to see outside right in front, see anything, two eyes Angle is not the same. Although image gap is very small, but the image eyes to the brain, the brain with this tiny gap, feeling and depth,NBA Hats which causes the stereo feeling. 3 D movie is to use two shots from two different direction and photographed image of the scenery, and made into a film. In showing, with two projector will two groups of film synchronization features, make this a little difference between two images of overlap in the screen. Then if use eyes to watch directly, see the picture is a double. When put on a special 3 D glasses (in fact is a polarizing glasses), left eye can see the left as the right, can only see right like, through the eyes converge function will be left and right of the eye and the like, the brain produces three-dimensional visual effect. This is the principle of three-dimensional film. In the 3 D movie saw on a stereo peace we see true stereo is different, the former is virtual simulation result. This virtual simulation stereo feeling the need to watch the eyes moving the muscles of the eyes, the tension adjust to complete. Long time in theaters dark environment, and strong effects of the sound exciting, these will make the person's eye fatigue. Plus movie plot nervous, audience long time zheng big eyes, emotional, in this case, there could be eyes discomfort, and even cause acute attack glaucoma. What is unfavorable see 3 D movie 1, glaucoma or are at risk of glaucoma. For example, doctor check find the eyes, the Angle of a narrow shallow anterior chamber intraocular pressure, people with higher, are related by blood relatives in patients with glaucoma, senile cataract expansion of the patients. 2, serious patients with dry eyes. Long time open your eyes and use eye may increase dry eyes. If sitting on the first three rows cinema position, because from the screen is too close, look for one hour to stick his neck, the zheng big eye up look, make the eye surface exposure in the air area increases, significantly increase dry eyes. 3, have such as his infectious eye disease. On the one hand long time with the eye, cause eye fatigue, go against the disease of recovery; On the other hand, now look at 3 D movies, will use the 3 D glasses cinema, except for some is the disposable use outside, most is to recycle and reuse,wholesale sunglasses easy cause cross-infection. 4, eyes stereo vision poor patients function. Bosseyed patient, two eyes vision is great and put on the 3 D glasses also can't see the stereo effect, or stereo feeling is very poor, and a long time also prone to eye fatigue, headaches and other symptoms. 5 and 3 years old the child within. They had developed stereo vision, don't feel to have a clear stereo effect. 
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