Nakazato H, Hanazaki H, Kawasaki K, Tanabe J, Yonemura D
Doc Ophthalmol. 1986 Jul 15;63(2):179-86. doi: 10.1007/BF00157129.
The spectral sensitivity of the rapid off-response in the electroretinogram is found to be abnormal in all protans and deutans so far tested, and in some of their genetic carriers. The rapid off-response is an objective means of assessing the x-linked recessive color deficiencies and their carrier state.