The present invention relates to a composition containing ursodeoxycholic acid (UDCA) for prevention or treatment of visual impairment. More specifically, the present invention relates to a pharmaceutical composition, which allows oral administration, intraocular injection, or eye drop administration, by aqueous solubilized ursodeoxycholic acid, leading to excellent prevention or treatment effects of visual impairment-causing diseases, such as macular degeneration, glaucoma, and diabetic retinopathy.