The conjunctival surfaces are richly supplied with the cellular components of the immune system and represent a first line of antigenic response. As a consequence, allergic conjunctivitis is not uncommon, particularly in those patients affected by generalized dermal allergic or atopic disease. Treatment comprises the avoidance of inciting allergens where possible, the systemic management of generalized atopy where appropriate and the application of topical anti-inflammatory therapy, the frequency and duration of application being determined by the clinical picture.