Since the combination of hyaluronic acid and flavin adenine dinucleotide or salts can significantly inhibit the decrease of viable cell number of corneal epithelium cells caused by ultraviolet irradiation or dry, it can become an inhibitor of corneal epithelium cell death caused by ultraviolet irradiation and/or dry.透明質酸或其鹽及黃素腺嘌呤二核苷酸或其鹽的組合由於可顯著抑制因照射紫外線或乾燥所誘發之角膜上皮細胞的活細胞數的降低,故可作為因照射紫外線及/或乾燥所誘發的角膜上皮細胞死亡抑制劑。