Ranges of Vision Loss
Various scales have been developed to describe the extent of vision and vision loss based on visual acuity. Early editions of the World Health Organization's ICD described a simple distinction between "legally sighted" and "legally blind". The ICD-9 released in 1979 introduced the smallest continuous scale which consisted of three tiers: normal vision, low vision, and blindness.
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Famous quotes containing the words vision and/or loss:
“I wish I could take back some of the things I said and some of the things I did. But in the bigger picture, I don’t feel that it was violent and terrible. I feel like it was primarily—obviously not completely—moral, based on a vision that the government should be better, and that people could be better, and that democracy should be real.”
—Bernardine Dohrn (b. 1942)
“A gain is no joy, nor a loss any grief.”
—Chinese proverb.