Watching naked 3D will not normally harm your eyes, but watching naked 3D for a long time may cause problems such as visual fatigue and increased myopia. Naked eye 3D can be realized by a variety of technologies, such as stereoscopic prints or 3D drawings on the street, belong to the common type of naked eye 3D, under normal circumstances to see these 3D drawings, will not affect the health of the eyes. But the naked eye 3D images presented by cell phone or computer screen, although it will not harm the health of the eyes, but if you look at the screen of the above electronic products for a long time, it may cause visual fatigue, and even cause myopia growth. Even if you use your cell phone or computer to surf the Internet and play games, you should strictly control the time of use and not use it for too long.