According to the latest research report from the School of Optometry of the Pacific University in the United States, when viewing 3D TV too close to the screen, symptoms such as blurred vision and nausea can easily occur. We call this symptom "3D movie syndrome.
Dr. Yang Shunnan and his colleagues studied 203 adolescents and adult participants. The researchers asked the participants to watch the movie "Gourmet Falls from the Sky" on a 55-inch LCD TV. Some people watch the 2D (plane) version, while others watch the 3D (stereoscopic) version. Participants watched the movie from different distances and different angles, and received a questionnaire survey. The content involved discomfort symptoms before watching, discomfort during and after watching the movie. The results found that among the participants in the 2D group and the 3D group, 12% and 20% of the patients felt uncomfortable symptoms. Participants watching 3D movies are more likely to experience eye pain, eye movements, blurred vision, ghosting, dizziness, disorientation, headache, and nausea (ie "3D movie syndrome"). Participants 24-34 years of age are at higher risk of developing "3D syndrome" than older participants. The reason is that the visual acuity of older people gradually becomes farsighted and less sensitive to visual stimulation than young people.
"3D movie syndrome" is more likely to occur at home, and its symptoms will appear within 15 minutes of watching 3D TV. Dr. Yang said that when watching 3D TV, it is close to the screen, but the 3D effect will give people a very distant feeling, affecting the adjustment of human vision. Therefore, when watching 3D TV, it is best to stay away, especially young people. When watching 3D TV at home, keep the distance at least 3 times the height of the screen. Experts suggest that if symptoms such as dizziness and nausea appear, remove the 3D glasses in time and watch the movie directly.
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