Contrast sensation

Contrast sensation

Contrast sensation is a human ability to distinguish objects which scarcely stand out against a background. Contrast sensation is evaluated on the basis of sinusoidal grids.Fact|date=November 2007 The increased threshold of contrast sensation may be a symptom of various eye diseases.

Example

Online investigation of contrast sensation aimed at diagnosing cornea edema caused by excessively long contact lens wear, test for a possibility of contact lens continuous wear.

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Sensation (event) — Sensation is an indoor dance event which originated from the Netherlands. The original event which ran exclusively in the Amsterdam ArenA for a period of five years until 2005 is now located throughout Poland, Spain, Chile, Germany, Belgium,… …   Wikipedia

  • Contrast — Short for contrast media. Contrast media are X ray dyes used to provide contrast, for example, between blood vessels and other tissue. * * * 1. A comparison in which differences are demonstrated or enhanced. 2. In radiology, the difference… …   Medical dictionary

  • Iodinated contrast — is a form of intravenous radiocontrast (radiographic dye) containing iodine, which enhances the visibility of vascular structures and organs during radiographic procedures. Some pathologies, such as cancer, have particularly improved visibility… …   Wikipedia

  • Motif of harmful sensation — The motif of harmful sensation is a recurring idea in literature: physical or mental damage that a person suffers merely by experiencing what should normally be a benign sensation. The phenomenon appears in both traditional and modern stories.The …   Wikipedia

  • eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

  • Psychology (The separation of) from philosophy — The separation of psychology from philosophy Studies in the sciences of mind 1815–1879 Edward S.Reed THE IMPOSSIBLE SCIENCE Traditional metaphysics The consensus of European opinion during and immediately after the Napoleonic era was that… …   History of philosophy

  • epistemology — epistemological /i pis teuh meuh loj i keuhl/, adj. epistemologically, adv. epistemologist, n. /i pis teuh mol euh jee/, n. a branch of philosophy that investigates the origin, nature, methods, and limits of human knowledge. [1855 60; < Gk… …   Universalium

  • performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical.       The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …   Universalium

  • endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

  • literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”