Which drug class does Lumina, Travatan, Xalatan belong to?

• A. Prostaglandin analogs
• B. Beta blockers
• C. Carbonic anhydrase inhibitors
• D. Antibiotics

Answer: (A)

The drugs Lumina, Travatan, and Xalatan are all prostaglandin analogs, specifically prostaglandin F2α analogs used to treat glaucoma. They lower intraocular pressure mainly by increasing the outflow of aqueous humor through the uveoscleral pathway. They act on FP receptors in the eye to remodel tissues around the drainage routes, making drainage easier. This class is typically given once daily and tends to have strong IOP-lowering effects with a favorable systemic safety profile.

Other options don’t fit because beta blockers reduce aqueous humor production rather than increasing outflow (that’s why they’re not the correct class here). Carbonic anhydrase inhibitors also lower production, not outflow. Antibiotics don’t address intraocular pressure at all.