Abstract
Protanopic, deuteranopic and tritanopic neutral points were computed by determining the wavelength of light that produced the same quantal-catch ratio in the photopigments as that produced by a broad-band light of specified color temperature (range: 2 800–6 600 K). The Vos-Walraven primaries were used as photopigment absorption spectra that were screened by varying densities of ocular (0.5–2,5 at 400 nm) and macular (0.0–1.0 at 460nm) pigmentation. The computations were carried out in 1 nm steps for the wavelength range of 380 to 720 nm. Most of the empirically determined mean, neutral-point loci in the literature were predicted from these computations to within 1–2 nm when average ocular and macular pigment densities were used. The neutral-point range associated with the extreme values of the prereceptoral screening pigments was up to 25 nm for protanopes and deuteranopes and up to 13 nm for tritanopes.
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© 1984 Dr W. Junk Publishers The Hague, Boston, Lancaster
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Kliegl, R., Volbrecht, V.J., Werner, J.S. (1984). Influences of Variation in Lenticular and Macular Pigmentation on Dichromatic Neutral Points. In: Verriest, G. (eds) Colour Vision Deficiencies VII. Documenta Ophthalmologica Proceedings Series, vol 39. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6551-5_17
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DOI: https://doi.org/10.1007/978-94-009-6551-5_17
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