How can you tell if you have pink eye or an eye infection ?

Pain, vision: Pink eye is the common term for viral infection of the eye. It may affect one eye but commonly affects both. The eye is red, has a clear discharge, may be a little swollen, sometimes is light sensitive and usually is irritated but not painful. Since it is infectious, others around you might also have the same thing or you may spread yours to them. If bacterial there is pain and decreased vision.