A preservative-free contact lens treating solution includes (a) about 0.005 to about 2 wt. %, based on the total weight of the preservative-free contact lens treating solution, of hyaluronic acid or a salt thereof; (b) about 0.01 to about 1 wt. %, based on the total weight of the preservative-free contact lens treating solution, of erythritol; (c) one or more nonionic surfactants; (d) sodium chloride, potassium chloride or any combination thereof; and (e) one or more buffers.