Cosopt eye drops comprise a mixture of dorzolamide and timolol. Dorzolamide reduces the amount of fluid in the eye, which lowers intraocular pressure. Timolol is a beta blocker that similarly lowers intraocular heaviness. Cosopt is a prescription eye drop solution used to treat open-angle glaucoma or high blood pressure in the eye when a beta blocker alone does not control eye pressur... https://www.onlinegenericmedicine.com/cosopt-eye-drop-dorzolamide-timolol