A method of analyzing the degree of abnormality in the eye is provided, and in the method at least some portion of the functional evaluation of the eye's visual function is performed by presenting visual stimuli in mesopic conditions. A visual function examination device is provided, and in the device the spectral composition of the stimuli is generated by a projection or display device, and the said projection or display device can be adjusted so that individual receptor types can be excited by the said stimuli.