FAST ABSOLUTE-REFLECTANCE METHOD FOR THE DETERMINATION OF TEAR FILM LIPID LAYER THICKNESS

摘要

A method of determining tear film lipid layer thickness. The method includes the steps of measuring a tear film aqueous plus lipid layer relative reflectance spectrum using a wavelength- dependent optical interferometer; converting the measured tear film aqueous plus lipid layer relative reflectance spectrum to a calculated absolute reflectance spectrum; and comparing the calculated absolute reflectance spectrum to a theoretical absolute lipid reflectance spectrum to determine a tear film lipid layer thickness.