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  2. Macula - Wikipedia

    en.wikipedia.org/wiki/Macula

    The macula (/ˈmakjʊlə/) [1] 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.

  3. Fovea centralis - Wikipedia

    en.wikipedia.org/wiki/Fovea_centralis

    The fovea centralis is a small, central pit composed of closely packed cones in the eye.It is located in the center of the macula lutea of the retina. [1] [2]The fovea is responsible for sharp central vision (also called foveal vision), which is necessary in humans for activities for which visual detail is of primary importance, such as reading and driving.

  4. Perifovea - Wikipedia

    en.wikipedia.org/wiki/Perifovea

    Photograph of the retina of the human eye, with overlay diagrams showing the positions and sizes of the macula, fovea, and optic disc. Perifovea is a region in the retina that circumscribes the parafovea and fovea and is a part of the macula lutea. [1] The perifovea is a belt that covers a 10° radius around the fovea and is 1.5 mm wide.

  5. Human eye - Wikipedia

    en.wikipedia.org/wiki/Human_eye

    Other functions include maintaining the circadian rhythm, and keeping balance. ... Macula or macula lutea, 22. Fovea and 23. Optic disc → blind spot; 24.

  6. meso-Zeaxanthin - Wikipedia

    en.wikipedia.org/wiki/Meso-zeaxanthin

    Meso-zeaxanthin, lutein, and 3R,3′R-zeaxanthin are the main carotenoids in the macula lutea, found in a ratio of 1:1:1, and are collectively referred to as macular pigment (MP). [3] Meso-zeaxanthin is concentrated at the epicentre of the macula, where it accounts for around 50% of MP at this location, with lutein dominating the peripheral macula.

  7. Parafovea - Wikipedia

    en.wikipedia.org/wiki/Parafovea

    Parafovea or the parafoveal belt is a region in the retina that circumscribes the fovea and is part of the macula lutea. [1] It is circumscribed by the perifovea.. Photograph of the retina of the human eye, with overlay diagrams showing the positions and sizes of the macula, fovea, and optic disc

  8. It's important to understand that lotuses are in the Nelumbo genus, which includes just two species: Nelumbo nucifera (AKA the sacred lotus or Indian lotus) and Nelumbo lutea (American lotus).

  9. Retina - Wikipedia

    en.wikipedia.org/wiki/Retina

    The macula has a yellow pigmentation, from screening pigments, and is known as the macula lutea. The area directly surrounding the fovea has the highest density of rods converging on single bipolar cells. Since its cones have a much lesser convergence of signals, the fovea allows for the sharpest vision the eye can attain. [2]