The treatment choice will depend on the individual’s symptoms and the cause. Use the WWHAM questions and refer to the pharmacist when necessary. Always ask if the customer wears contact lenses – this may influence product choice and any advice given – and check product labels to determine suitability. Customers who wear contact lenses and have red eyes may have an infection, so always check with the pharmacist.

Infective conjunctivitis

Bacterial infective conjunctivitis may be treated using OTC antibacterial eye drops or ointments. Active ingredients include chloramphenicol and propamidine isetionate, and brands include Brochlor, Brolene and Optrex Infected Eye Drops. If no improvement occurs within the specified treatment time (see individual product labels), the customer should be referred to the pharmacist. 

Allergic conjunctivitis

Sodium cromoglicate is a mast cell stabiliser that helps reduce the amount of histamine released when a susceptible individual encounters an allergen such as pollen. OTC brands include Opticrom Allergy, Optrex Allergy and Murine Hayfever Relief. Some products are not suitable for children under six years of age.

Irritant conjunctivitis

Eye drops containing naphazoline relieve redness by reducing the size of blood vessels in the conjunctiva. These may be useful for redness caused by temporary irritation. Brands include Optrex Bloodshot Eyes.

Did you know?

Contact lenses can’t get lost behind the eye because the conjunctiva, which covers the white of the eye, also lines the eyelids.