<prompt> All of the following agents are used in glaucoma treatment, except:ApraclonidineTimololPilocarpineMetoprolol  <response>: - Drugs used in GlaucomaMiotics- Pilocarpine, Physostigmine, EchothiophateBeta-blockers - Timolol, levobunolol, Carteolol, betaxololPGF2α analogs - Latanoprost, bimatoprost, travoprostAlpha 2 agonist- Apraclonidine, brimonidineAlpha 1 agonist- Dipivefrine, adrenalineCarbonic anhydrase inhibitors- Dorzolamide, brinzolamide- Metoprolol, though a beta blocker is not used for glaucoma because of its local anaesthetic property. Drugs having local anaesthetic property will increase the risk of corneal ulcers. 