Blind People - Signs and Symptoms

Signs and Symptoms

Blindness is defined by the World Health Organization as vision in a person's best eye of less than 20/500 or a visual field of less than 10 degrees. This definition was set in 1972 and there is ongoing discussion on if it should be altered somewhat.

Read more about this topic:  Blind People

Famous quotes containing the words signs and, signs and/or symptoms:

    The LORD brought us out of Egypt with a mighty hand and an outstretched arm, with a terrifying display of power, and with signs and wonders; and he brought us into this place and gave us this land, a land flowing with milk and honey.
    Bible: Hebrew, Deuteronomy 26:8.

    The LORD brought us out of Egypt with a mighty hand and an outstretched arm, with a terrifying display of power, and with signs and wonders; and he brought us into this place and gave us this land, a land flowing with milk and honey.
    Bible: Hebrew, Deuteronomy 26:8.

    Murderous desire, hatred, distrust are nowadays the accompanying signs of physical illness: so thoroughly have we embodied our moral prejudices.—Perhaps cowardice and pity appear as symptoms of illness in savage ages. Perhaps even virtues might be symptoms.
    Friedrich Nietzsche (1844–1900)