Described is a combination of a prophylactic or therapeutic agent for glaucoma or ocular hypertension, which is useful as a prophylactic or therapeutic agent for glaucoma or ocular hypertension. By combining sepetaprost and a Rho-associated coiled-coil containing protein kinase inhibitor(s), an intraocular pressure lowering action is enhanced as compared with the case where each drug is used alone. As the form of administration, they may be administered concomitantly or may be administered as a combination drug.