yellow spot - définition. Qu'est-ce que yellow spot
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Qu'est-ce (qui) est yellow spot - définition

OVAL-SHAPED PIGMENTED AREA NEAR THE CENTER OF THE RETINA
Maculae; Macula lutea; Macula Lutea; Yellow spot; Yellow-spot; Macula of the retina; Yellow spots; Macula of retina
  • Photograph of the retina of the human eye, with overlay diagrams showing the positions and sizes of the macula, fovea, and optic disc
  • Schematic diagram of the macula lutea of the retina, showing perifovea, parafovea, fovea, and clinical macula

Macula of retina         
The macula (/ˈmakjʊlə/) or macula lutea is an oval-shaped pigmented area in the center of the retina of the human eye and in other animals. The macula in humans has a diameter of around and is subdivided into the umbo, foveola, foveal avascular zone, fovea, parafovea, and perifovea areas.
Maculae         
·pl of Macula.
Macula         
·noun A rather large spot or blotch of color.
II. Macula ·noun A spot, as on the skin, or on the surface of the sun or of some other luminous orb.

Wikipédia

Macula

The macula (/ˈmakjʊlə/) or macula lutea is an oval-shaped pigmented area in the center of the retina of the human eye and in other animals. The macula in humans has a diameter of around 5.5 mm (0.22 in) and is subdivided into the umbo, foveola, foveal avascular zone, fovea, parafovea, and perifovea areas.

The anatomical macula at a size of 5.5 mm (0.22 in) is much larger than the clinical macula which, at a size of 1.5 mm (0.059 in), corresponds to the anatomical fovea.

The macula is responsible for the central, high-resolution, color vision that is possible in good light; and this kind of vision is impaired if the macula is damaged, for example in macular degeneration. The clinical macula is seen when viewed from the pupil, as in ophthalmoscopy or retinal photography.

The term macula lutea comes from Latin macula, "spot", and lutea, "yellow".