Abstract: A combination of hyaluronic acid or a salt thereof and flavin adenine dinucleotide or a salt thereof can be an inhibitor for corneal epithelial cell death induced by ultraviolet irradiation and/or dryness because it significantly inhibits the decline of the number of living cells in corneal epithelial cells induced by ultraviolet irradiation or dryness.
Abstract: According to the present invention, a novel pharmacological effect of a compound having a PI3 kinase inhibitory action was found. Study on a novel pharmacological effect of the compound having a PI3 kinase inhibitory action revealed that the compound has an action of reducing intraocular pressure. Therefore, it is found that the compound having a PI3 kinase inhibitory action is useful as a therapeutic agent for glaucoma.