1. Inter eye comparison on the 100 hue test;Aspinall, P.A.;Acta Ophthalmol (Kbh),1974
2. Proposals for scoring and assessing the 100 hue test;Kinnear, PR;Vision Res,1970
3. Is the deterioration of colour discrimination with age due to lens or retinal changes?;Lakowski, R.;Tagungs Ber Intern Farbtagung
4. Colour perception. Changes with age, test results by Pickford-Nicholson anomaloscope;Ohta, Y.; Kato, H.;Mod Probl Ophthalmol,1976
5. Color vision and age;Pinckers, A.;Ophthalmologica,1980