Mechanical injury or foreign body

If you get something stuck in the eye, try and irrigate the eye with water to wash it out.  The eye may have scratched so it will be tender for a while.  Never attempt to pull an object out of the eye yourself.  If you are worried that the object may have penetrated the eye, apply no pressure to the eye and lie down  Then get somebody to phone for an ambulance, or drive you to casualty.   A hit to the eye will cause the blood vessels to burst and produce a swollen 'black' eye.  Rest and ice will help