Abstract
With the help of a method based on the Goldmann projection perimeter, measurements of spectral sensitivity during chromatic adaptation are performed utilizing the principle of the two‐colour threshold technique of Stiles. The method is flexible and is used for central as well as for peripheral registration. Characteristic sensitivity curves and static perimetry curves of normally sighted persons are demonstrated showing that each type of cones can be clearly separated and identified. With smaller sized objects, the foveal blue blindness is confirmed whilst in the parafoveal region the response of the blue receptor is good.