Opticrom Allergy 2% w/v Eye Drops (called Opticrom Allergy in this leaflet) contain a medicine called sodium cromoglicate. This belongs to a group of medicines called anti-allergics.
It works by stopping the release of the natural substances in your eyes that can lead to an allergic reaction. Signs of an allergic reaction include itchy, watery, red or inflamed eyes and puffy eyelids.