Can you lose a contact lens in the back of your eye?
It is almost impossible for a contact lens to get trapped behind your eye.
The surface of the eyelid hosts a thin, moist lining called the conjunctiva. The conjunctiva folds back and covers the white area of the eyeball at the back of the eyelid. The way in which the conjunctiva is positioned from the eyelids to the eyeball makes it impossible for anything to get trapped behind the eye.