Person with one eye can also see 3D movies, but they cannot enjoy the fun of watching 3D movies. You know, a 3D film is a motion picture that enhances the illusion of depth perception. It employs the principle of polarization, what people see is two images projected superimposed onto the same screen. And when watching a 3D movie, people wear the glasses which contain a pair of polarizing filters oriented differently. As each filter passes only that light which is similarly polarized and blocks the light polarized differently, each eye sees a different image. In this way, a three-dimensional effect is produced. Therefore, people with one eye are unable to have the exciting feeling as the normal people when watching 3D film because what they see has no three-dimensional effect, it makes no difference with 2D picture.
Yes, people with one eye can still see 3d movies. They could just wear the 3d goggles to see 3d movies. Their vision may be affected to some degree. However they could see the 3d movies. People with one eye may have more weak vision than those with two healthy eyes. They need to protect the only one eye carefully through the healthy diet and good rest.