As a contact lens user, you’re probably aware that it’s not advisable to mix up your left and right lenses. You also probably have a way of knowing which case contains the contact lens for your right eye and which one contains the lens for your left eye. But what if they do get mixed up somehow? Well, you’re likely to feel a bit of discomfort and maybe even a painful stinging in your eyes. Needless to say, you need to remove the lenses immediately when this happens.
Fact: Contact lenses CAN get dislodged from your eye: ... Contacts can get stuck under your eyelid, but it's not possible for them to go behind your eye, as your eyelids actually connect with your eye itself forming a barrier that prevents objects from going "behind" your eye.