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macula

Syllabification: mac·u·la
Pronunciation: /ˈmakyələ
 
/

Definition of macula in English:

noun (plural maculae /-ˌlē, -ˌlī/)

1A distinct spot, such as a discolored spot on the skin. Also called macule.
Example sentences
  • Numerous observational studies have examined the correlation between lutein and zeaxanthin concentrations in the macula, dietary intake, and macular degeneration.
  • Visual acuity drops off rapidly outside the macula.
  • But as the body ages, the importance of carotenoids in the macula may increase because of the lifelong exposure to damaging light.
1.1 (also macula lutea) /ˌmakyələ ˈlo͞odēə/ (plural maculae luteae /ˈlo͞otēˌē, -tēˌī/) Anatomy An oval yellowish area surrounding the fovea near the center of the retina in the eye. It is the region of greatest visual acuity.
Example sentences
  • The macula lutea or ‘yellow spot’ in the retina is responsible for central vision and visual acuity.
  • When we gaze directly at an object, we hold our eyes in such a position that the image of the object falls on the central, specialized region of the retina - the fovea or macula - where visual acuity and colour vision are best.
  • The vision loss results from loss of function of the macula, the centre of the retina, which is responsible for central visual tasks such as reading, driving, and recognising faces.

Origin

late Middle English: from Latin, 'spot'.

Derivatives

macular

1
Pronunciation: /ˈmakyələr/
adjective
Example sentences
  • New treatments such as photodynamic therapy and macular surgery may limit the extent of visual loss and in a few cases even restore sight.
  • A history of coronary artery bypass grafting or angioplasty was associated with macular degeneration.
  • Loss of vitreous gel can occur, predisposing the patient to postoperative inflammation, macular oedema, or retinal detachment.

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