Macular vision
: The macula is a special area in the center of the retina, the light-sensitive layer of tissue at the back of the eye. As we read, light is focused onto our macula. There, millions of cells change the light into nerve signals that tell the brain what we are seeing. This is called our macular or central vision. Thanks to central vision, we are able to read, drive, and perform other activities that require fine, sharp, straight-ahead vision.

Medical dictionary. 2011.

Look at other dictionaries:

  • Macular — Pertaining to the macula. A macula is a small spot. A macula on the skin is a small flat spot while the macula in the eye is a small spot where vision is keenest in the retina. The macula of the retina, the light sensitive layer of tissue at the… …   Medical dictionary

  • Macular (skin) — Adjective referring to macules which are circumscribed changes in the color of skin that are neither raised (elevated) nor depressed. Macules are never large. They are little spots or blemishes in the skin. They are entirely flat and can only be… …   Medical dictionary

  • macular — ˈmakyələ(r) adjective Etymology: macula + ar 1. a. : of or relating to a spot or spots b. [New Latin macula (lutea) + English ar] : mediated by the macula lutea …   Useful english dictionary

  • Macular degeneration — Classification and external resources Picture of the fundus showing intermediate age related macular degeneration. ICD 10 …   Wikipedia

  • Macular edema — Classification and external resources ICD 10 H35.8 …   Wikipedia

  • Vision loss — or visual loss is the absence of vision where it existed before, which can happen either acutely (i.e. abruptly) or chronically (i.e. over a long period of time). The effects of visual loss can, before the acquisition of alternative adaptations… …   Wikipedia

  • Vision span — or perceptual span is the angular span (vertically and horizontally), within which the human eye has sharp enough vision to read text. The visual field of the human eye spans approximately 120 degrees of arc. However, most of that arc is… …   Wikipedia

  • macular degeneration — n. an eye disorder in which the macula lutea gradually deteriorates, resulting in blurred vision, blind spots, etc …   English World dictionary

  • Macular degeneration — A disease that progressively destroys the macula, the central portion of the retina, impairing central vision. Macular degeneration rarely causes blindness because only the center of vision is affected. However, injury to the macula in the center …   Medical dictionary

  • Macular cyst — A hole in the macula, the tiny oval area made up of millions of nerve cells located at the center of the retina responsible for sharp, central vision. The eye contains a jelly like substance called the vitreous. Shrinking of the vitreous usually… …   Medical dictionary

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