Bactroban (mupirocin) is an antibiotic that prevents bacteria from growing on your skin. Bactroban topical (for use on the skin) is used to treat skin infections such as impetigo or a "Staph" infection of the skin.
Generic Diprolene is a steroid. Betamethasone as an active ingredient, prevents the release of substances in the body that cause inflammation. Betamethasone topical (for the skin) is used to treat the inflammation and itching caused by a number of skin conditions such as eczema, psoriasis, or allergic reactions.
Tobrex (for the eyes) is used to treat bacterial infections of the eyes. Tobrex will not treat a viral or fungal infection of the eye. Tobrex is for use in treating only bacterial infections.