Central Vision | Furniture Design Ideas

Figure 10.5 shows a cross-section of a human eye. The incoming light is focused by the lens and falls onto the retina that lines the back of the eye. Different parts of the retina have different types of light-sensitive cells on them. In the central section

TABLE 10.5

Coloured Light on Different Coloured Surfaces

surface/			Ught
Colour	Red	Blue	Green	Yellow
Red	Bright red	Bluish red	Yellow-red	Light red
Blue	Red-purple	Bright blue	Dark green-blue	Reddish purple
Green	Olive green	Green-blue	Bright green	Yellow-green
Yellow	Red-orange	Reddish brown	Greenish yellow	Bright orange
Brown	Brown-red	Blue-brown	Dark olive brown	Brownish orange

Source: Modified from Woodson (1981).

Central Vision

FIGURE 10.4 Relative sensitivity of the eye for different wavelengths of light.

Central Vision

FIGURE 10.5 Cross-section of the human eye.

(fovea) are cones (see Figure 10.6), which are less sensitive to light. The cones are used for detailed imaging, and have a very different ability to distinguish detail from the rods that are found more peripherally around the retina; the rods are considerably more sensitive to light. The rods are used mainly for night vision and the cones for daylight vision. The cones help us distinguish colour.

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