Provision of an agent for promoting proliferation of meibomian gland epithelial cells or corneal epithelial cells, and a therapeutic agent for ocular diseases such as meibomian gland dysfunction, dry eye and the like. A preparation containing [3-[2-[4-isopropyl-2-(4-trifluoromethyl)phenyl-5-thiazolyl]ethyl]-5-methyl-1,2-benzisoxazol-6-yl]oxyacetic acid, [4-[3-[2-(4-trifluoromethyl)phenyl-4-isopropyl-5-thiazolyl]propionyl]-2-methylphenoxy]acetic acid or [4-[3-[2-(2-hydroxy-4-chlorophenyl)-5-isopropyl-4-oxazolyl]propionyl]-2-methylphenoxy]acetic acid, or a pharmacologically acceptable salt thereof as an active ingredient is used as an agent for promoting proliferation of meibomian gland epithelial cells or corneal epithelial cells, as well as a therapeutic agent for ocular diseases such as meibomian gland dysfunction, dry eye and the like.
