A detached lens refers to an eye injury where the eye lens is detached from the eye.  This sometimes presents as red-eye or a cloudy or odd-shaped pupil. It is sometimes accompanied by eye pain, decreased vision, and/or double-vision. This type of injury is a common blunt force trauma injury and can lead to more serious conditions such as a detached retina if it goes untreated.  Immediate medical care from an emergency room should be sought if this is suspected.