What medication is commonly used to treat open angle glaucoma?

Brimonidine is a commonly used medication to treat open-angle glaucoma because it works as both an alpha-2 adrenergic agonist and a neuroprotective agent. By reducing aqueous humor production and increasing uveoscleral outflow, brimonidine effectively lowers intraocular pressure, which is crucial in managing glaucoma. It is particularly favored when patients require additional pressure-lowering therapy or when other medications may not be appropriate.

Other options such as Diamox and Mannitol are typically utilized in acute situations like glaucoma attacks rather than for chronic management. Diamox (acetazolamide) is a carbonic anhydrase inhibitor that can decrease aqueous humor production but is generally used in conjunction with other treatments during acute conditions. Mannitol is an osmotic diuretic usually reserved for rapid decrease in intraocular pressure in emergencies due to its quick onset but not for regular treatment. Pilocarpine is a miotic agent that can also lower intraocular pressure but is used less frequently due to its side effects and the availability of more effective first-line therapies like brimonidine.