It is an object of the invention to examine the minimum unit of the exhibition of the activity of insulin-like growth factor-I and find a pharmaceutical use thereof in the fields of ophthalmology and dermatology. A joint administration of a peptide containing the amino acid sequence represented by Ser-Ser-Ser-Arg as the minimum unit of the exhibition of the activity of insulin-like growth factor-I and a peptide containing the amino acid sequence represented by Phe-Gly-Leu-Met-NH2 is effective for curing corneal disorders and can significantly promote the healing of skin wounds.
