<prompt> Which anti-glaucoma drug can be used in an asthmatic patient?TimololBetaxololPropanololAll  <response>: Ref: KD Tripathi pharmacology 6th edition page.no: 144 Betaxolol is b1 selective blocker offering the advantage of less bronchopulmonary and probably less cardiac, central and metabolic side effects. In addition, it may exe a protective effect on retinal neurones independent of I.O.T lowering, possibly by reducing Na Ca influx. Propanolol and Timolol are-selective b blockerSb1 b2. So b2 blocking effect precipitate asthma 