What happens if your in an accident and your admitted to a hospital while unconscious with your contacts in?

They usually check. Most times, when a patient is admitted through the trauma unit, a checklist is performed and looking for contact lenses is one of those tasks on the list. If one is found, saline is applied and they are removed. Sometimes, it takes a very close look but usually they are found. If the contact lens is left in place, the eye will usually turn red later and ophthalmology is frequently consulted.
Admission to ER. It is always a good idea to carry a copy of all of your medications, major medical problems and the fact that you are a contact lens user.