Which medication is classified as a beta blocker specifically for the eyes?

Timolol is a medication classified as a non-selective beta blocker that is used specifically for treating conditions related to the eyes, primarily glaucoma and ocular hypertension. By blocking beta-adrenergic receptors, Timolol reduces intraocular pressure by decreasing the production of aqueous humor within the eye. This makes it effective in managing these eye conditions.

The other medications listed do not fall into the beta blocker category or are not specifically designed for ocular use. Brimonidine is an alpha-2 adrenergic agonist that decreases aqueous humor production and increases uveoscleral outflow. Netarsudil is a Rho kinase inhibitor that helps enhance the outflow of aqueous humor. Cidofovir is an antiviral medication primarily used for treating cytomegalovirus (CMV) infections and is not utilized for eye pressure management. Thus, Timolol stands out as the specific beta blocker used in ophthalmology.