from Pharmacist, and GoldenEye advisor, Sultan Dajani:
Golden Eye® Eye Drops contain propamidine isetionate, whilst Golden Eye® Eye Ointment contains dibrompropamidine isetionate. Both of these compounds belong to a group of medicines called antiseptics, part of the aromatic diamidine group of compounds which possess bacteriostatic properties against a wide range of organisms. This means they stop bacteria from growing and multiplying rather than killing them. They control the number of bacteria causing the eye infection, so helping to relieve symptoms. The remaining bacteria die or are killed by your body’s immune system.
Diamidines exert antibacterial action against bacteria such as pyrogenic cocci, antibiotic-resistant staphylococci and some Gram-negative bacilli. Of relevance to eye infections, the activity of the diamidines is retained in the presence of organic matter such as tissue fluids, pus, and serum. Always read the label.