Colour vision: A patchwork of cones

@article{Wassle1999ColourVA,
  title={Colour vision: A patchwork of cones},
  author={Heinz Wässle},
  journal={Nature},
  year={1999},
  volume={397},
  pages={473-475}
}
Primates — humans, monkeys and apes — have a very different retinal structure to that of other mammals. We use a trichromatic system, made up of three types of cone cell with peak sensitivities in different regions of the visual spectrum. Now, using an imaginative new technique, we can take our first look at the arrangement of these cones in the living human retina. 
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References

SHOWING 1-5 OF 5 REFERENCES

The spatial arrangement of cones in the primate fovea

TLDR
Direct microspectrophotometric measurements of patches of foveal retina from Old World monkeys are made, and it is reported here that the distribu tion of long- and middle-wave cones is locally random.

The arrangement of the three cone classes in the living human eye

TLDR
Adaptive optics and retinal densitometry are combined to obtain the first images of the arrangement of S, M and L cones in the living human eye, allowing the sharpest images ever taken of the living retina.

The 'blue-on' opponent pathway in primate retina originates from a distinct bistratified ganglion cell type

TLDR
The results thus demonstrate an anatomically distinct pathway that conveys S-cone signals to the brain, and the morphology of the blue-on cell suggests a novel hypothesis for the retinal circuitry underlying the blue–yellow opponent response.

Treatise on Physiological Optics

TLDR
A composite thin film resistor is disclosed, including an electrically inert substrate upon which is deposited a nickel-chromium alloy thin film, and an overlying second thin film - which is initially deposited as metallic tantalum - which provides a very high degree of environmental protection with respect to the Ni-Cr film.

Spectral sensitivity of human cone photoreceptors

TLDR
Spectral sensitivities of 'green' and 'red' cones, determined over the entire visible region, show peaks near 530 and 560 nm respectively, and are remarkably similar to those of the old-world monkey Macaco fascicularis, which satisfactorily predict the photopic luminosity function, a measure of the sensitivity of cone-mediated human vision to light of different wavelengths.