Abstract: Method for determining spectral sensitivity parameters of color-sensitive receptors in the eye, in the course of which at least one testing light beam is introduced onto an area of the retina of an eye to be tested, and at least one sensitivity parameter is determined by detecting a light beam reflected from the retina or by using color perception of the person tested. In addition to said at least one testing light beam, at least one auxiliary light beam of a wavelength falling outside the spectral sensitivity wavelength range of color-sensitive receptor or receptors to be measured is also introduced onto at least the same area of the retina, said at least one auxiliary light beam reducing the sensitivity of color-sensitive receptor or receptors not to be measured.