macula

Definitions

  • WordNet 3.6
    • n macula a patch of skin that is discolored but not usually elevated; caused by various diseases
    • n macula a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision
    • n macula a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field
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Webster's Revised Unabridged Dictionary
    • Macula (Zoöl) A rather large spot or blotch of color.
    • Macula A spot, as on the skin, or on the surface of the sun or of some other luminous orb; called also macule.
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Century Dictionary and Cyclopedia
    • n macula A spot; a blotch. Specifically
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Chambers's Twentieth Century Dictionary
    • n Macula mak′ū-la a spot, as on the skin, or on the surface of the sun, moon, or planets
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Etymology

Webster's Revised Unabridged Dictionary
L., spot, stain, blot. See Mail armor, and cf. Mackle Macule
Chambers's Twentieth Century Dictionary
L. maculāre, -ātummacula, a spot.

Usage

In literature:

P. supra plumbea macula, fasciaque rufa ornata, subtus albida.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
Colutea Novae Hollandiae floribus amplis coccineis, umbellatim dispositis macula purpurea notatis.
"A Voyage to New Holland" by William Dampier
Abdomen with a yellow macula at the tip.
"Journal of the Proceedings of the Linnean Society - Vol. 3" by Various
The macula rash was entirely unique so far as I knew, but a sketch greatly helped to fix it on one's memory.
"A Labrador Doctor" by Wilfred Thomason Grenfell
Bimaculate: with two spots or maculae.
"Explanation of Terms Used in Entomology" by John. B. Smith
Luminous streaks upon the disc of the sun, among which the maculae, or dark spots, usually appear.
"The Sailor's Word-Book" by William Henry Smyth
But beyond this no true macula has ever been seen; for Lahire's reported observation of one in latitude 70 deg.
"A Popular History of Astronomy During the Nineteenth Century" by Agnes M. (Agnes Mary) Clerke
Attached to the maculae are crystals of carbonate of lime called otoconia.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9" by Various
V. more than 1/7 4 cases, 4 excluded on account of choroiditis of the macula lutea.
"Schweigger on Squint" by C. Schweigger
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In news:

In dry AMD, cells in the macula — the part of the eye involved in sharp, central vision — break down, gradually blurring central vision.
As age-related macular degeneration progresses, patients frequently develop scarring in the macula , said Dr Jennifer Li, one of the UC Davis surgeons on the forefront of using the new device.
This larger image is then projected onto the healthy retina areas surrounding the degenerated macula .
Part of the reason that both forms of age-related macular degeneration are so disabling is that they attack a critical area of the eye called the macula , which is a tiny patch of cells in the center of the retina.
According to the US Centers for Disease Control and Prevention, DME occurs when fluid enters the macula , the central part of the eye's retina.
This causes the macula to expand, blurring vision.
In 2010, 3.9 million adult diabetics reported vision problems DME happens when fluid leaks into the macula , the central part of the retina where sharp, straightforward vision occurs.
In AMD, there is a deterioration of the macula , which is in the center of the retina, and loss of central vision results.
In age-related macular degeneration, the macula , the center of the retina, deteriorates.
In RVO, angiogenesis and hyperpermeability can lead to macular edema, the swelling and thickening of the macula .
Age-related macular degeneration (AMD) is a condition in which the part of the eye called the macula changes as people get older.
Drusenoid deposits are junk material that fill up in the macula and can cause the macula to degenerate.
The macula (which sounds like Dracula) is the center of vision in the retina.
When the doctor asks you to look straight into the light ( and some see a tunnel ), the doc is looking at your macula .
Luteins and zeaxanthin are the only carotenoids found as pigment in the macula .
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In science:

Macular degeneration is a chronic eye disease that occurs when tissues in the macula deteriorates.
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Macula is the part of the retina that is responsible for central vision.
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Degeneration of the macula causes blurred central vision or a blind spot in the center of your visual field.
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The macula is made up of densely packed light-sensitive cells called cones and rods.
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When the light-sensitive cells of the macula (cones) become damaged, it can no longer send normal signals through the optic nerve to your brain, and your vision becomes blurred.
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