Concussion is an injury to the brain, resulting in a disturbance of brain function. It causes short-lived neurological impairment and the symptoms may evolve over the hours or days following the injury.
Conjunctivitis or pink eye is an inflammation of the membrane covering the white of the eyes and the underside of the eyelids. There are numerous causes of the condition which is relatively common although not usually serious.
Eye injuries in sport are caused either by trauma or a foreign body in the eye, or infection. As with any head injury, it is advisable to seek medical advice with any injury to the eyes, especially if vision is impaired.