When dust, pollen or another irritant enters the eye, the eye should simply water and wash the substance out.  Unfortunately, for some people, the eye sometimes responds by releasing a substance called histamine.  Histamine triggers an inflammation reaction.  The classic symptoms are therefore a red, itchy watering eye, often with a white discharge.  An ice pack applied to the eye will help the blood vessels contract and will help with the swelling and the itchiness.  Antihistimine medication can be prescribed either short-term, usually administered in a drop form, or long term either taken as an oral medication


Any burn whether caused by fire or chemicals needs immediate irrigation with water for at least 10 minutes.  Chemical burns can continue to 'melt' the tissue of the eye and so you should go to casualty immediately for treatment