Macula

The macula or macula lutea is an oval yellow spot near the center of the retina of the human eye. It has a diameter of about 1.5 mm and is often histologically defined as having two or more layers of ganglion cells. Near its center is the fovea, a small pit that contains the largest concentration of cone cells in the eye and is responsible for central vision.

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Whereas loss of peripheral vision may go unnoticed for some time, damage to the macula will result in loss of central vision, which is usually immediately obvious.

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The progressive destruction of the macula is a severe disease known as macular degeneration.

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Yellow: Yellow is a color with a wavelength 565-590 nanometers. It is one of the subtractive primary colors, and its complementary color is blue. However, because of the characteristics of paint pigments used in the past, painters traditionally regard its complement as purple....

Retina: The retina is a thin layer of cells at the back of the eyeball of vertebrates and some cephalopods; it is the part of the eye which converts light into nervous signals....

Eye: : This article refers to the sight organ. See Eye (disambiguation) for other usages....