The invention provides a method for evaluating a corneal disorder quantitatively and is applicable to living eyes. In particular, the invention provides a method for measuring a corneal transepithelial electric resistance, which method comprises: (1) a step of placing a first electrode on the cornea and a second electrode on the conjunctiva and (2) a step of flowing an electric current between the first electrode and the second electrode to measure the electric resistance. The invention also provides a device for measuring a corneal transepithelial electric resistance value.
