Are there any 3D glasses in production or under development for those with single eye (monocular) vision? I am thinking particularly of glasses that could be worn for non-contact sporting activities such as tennis or cycling.
Good news :- actually there is .James Cameron is working on some kind of glasses free 3D which uses laser projection. Which he is planning to use for his next Avatar movie
Bad news :- this cannot be used in theatre because you can view the effect from a fixed point not from different positions . Hope it helped
And for your information 3D is not always better than 2D .not everyone enjoys 3D . especially me