Dorzolamide And Timolol Eye Drops For Animal  contain dorzolamide and timolol. Dorzolamide is an ACE inhibitor. It reduces the rate of aqueous humor production. Timolol is a non-selective beta-blocker that decreases aqueous humor production. Secondary Glaucoma can be a result of decreased removal of fluid from the internal eye, Uveitis (Inflammation of the internal eye), Displacement of the lens, eye cancer, and chronic retinal detachment.