Which disease would require treatment with Timolol, Pilocarpine, and Mannitol?

• A. Glaucoma
• B. Meniere's disease
• C. Cataracts
• D. Otitis media

Answer: (A)

The main idea here is how glaucoma is treated by combining drugs that lower intraocular pressure through different mechanisms. Timolol is a nonselective beta-blocker that reduces aqueous humor production by blocking beta receptors in the ciliary body, helping to lower pressure inside the eye. Pilocarpine is a muscarinic agonist that contracts the ciliary muscle and opens the trabecular meshwork, increasing outflow of aqueous humor and further lowering pressure. Mannitol acts as an osmotic agent given IV to create an osmotic gradient, pulling fluid out of the eye and rapidly reducing vitreous volume and intraocular pressure—useful in an acute glaucoma crisis. Together, these address both production and outflow, while Mannitol provides quick relief in emergencies. Conditions like Meniere’s disease or otitis media involve the ear, and cataracts involve the lens; they’re not treated with this combination of intraocular pressure–modifying drugs.