So depending on why you might be able to train it. If you don’t have a lazy eye and have good vision you may want to look into it.

If your brain is just not fusing two good images there is a good chance you can train it to do so. Having done experiments in this field I can tell you it makes a measurable difference in performance.

A good read on the subject is below. The part where she first sees a tree in 3D is a good example of what you are missing.

Fixing My Gaze: A Scientist’s Journey Into Seeing in Three Dimensions by Susan R Barry