Cosopt Eye Drops is a combination medication containing dorzolamide and timolol used to treat high pressure inside the eye (ocular hypertension) and open-angle glaucoma. This sterile ophthalmic solution comes in a 5ml bottle and helps reduce intraocular pressure by decreasing the production of fluid in the eye. Cosopt Eye Drops should be used exactly as prescribed by your doctor. The typical dosage is one drop in the affected eye(s) twice daily. The bottle contains a sterile solution and care should be taken to avoid contamination during use. Store at room temperature away from direct light and heat. As with any prescription eye medication, inform your doctor of any other medications you are using and any existing eye conditions or allergies.