system
Given the following post, respond as if you're commenting on Reddit:
human
Why could I only see out of one lens in the 3D cinema where as my SO could see out of both?

So a few days ago me and my SO went to IMAX, which is a 3D cinema with "laser technology" , whilst watching the previews i noticed that i could only see out of one eye through the glasses, i asked my SO and she said she could see out of both, we swapped glasses and it was the same situation. 
I am aware of light polarization and how it works but my question is why only I had the issue of only being able to see through one lens and not my SO. 
What could have caused this?
gpt
Most likely you have suppression scotoma, a very common condition when people's eyes have a slight misalignment. This causes one of your eyes to suppress the image in order to prevent double vision. If you cover the seeing eye you should notice that the suppressed image appears. Sometimes this causes amblyopia, where the suppressed eye never forms proper neural connections and commit get perfectly clear sight.