As more and more movies are made in 3D, more and more people are also very fond of watching 3D movies. 3D movies give us a sense of immersion, sensory stimulation is also more obvious. Similarly, 3d movies on the eye stimulation is also there, so, watch 3d movies on the eyes harmful? Here’s a look at it. 3D film is the use of the human eye perspective difference and convergence role to achieve a sense of three-dimensional, the two eyes see the picture is different, with a certain horizontal parallax, the left eye can see the left perspective shot picture, the same reason, the right eye can see the right perspective shot picture, when the picture on the screen, it will form a double image, the audience wear 3D glasses, the two eyes through the convergence role of the eyes, the The two eyes see the image superimposed, the brain produces a three-dimensional effect, feel immersive. Because 3D movies will lead to brain convergence – regulation differences, resulting in some people watch 3D movies for a long time, it is easy to eye fatigue, eye pain and other phenomena, and therefore, to a certain extent, there is an impact on vision. This is because watching 3D movies requires the eyes to constantly adjust the screen visually, and the normal coordination of convergence and adjustment cannot be carried out normally and is disrupted, and this incongruity sends signals to the brain, leading to eye discomfort and some blurred vision. The constant switching of 3D movie images, the human eye will also need to constantly make automatic adjustments to adapt, these factors will lead to eye fatigue more easily, vision loss. Children are also not suitable for watching 3D movies, because children’s vision is still in a state of development, external stimuli will directly affect the health of vision, if a long time need to constantly adjust, children’s eyes will also be very easy to fatigue, and, some brighter flash stimulation, will also affect the visual nerve, and then affect the development of vision. In addition, through the 3D movie principle we know that the eyes need constant adjustment, and children’s eyes are very plastic, constantly adjust the lens to change the focus, the development of the eye is a great impact, in serious cases, will lead to strabismus, amblyopia. Cinema 3D glasses are used by many people, and children’s resistance is relatively low, and some potential inflammation can also affect children’s eyes, which is also a threat to vision. Some special people are not suitable for watching 3D movies, such as those with high eye pressure, glaucoma, those who are particularly sensitive to light, etc., watching 3D movies is more harmful to vision.