单词 | Deficiency,Vitamin A |
释义 | Deficiency,Vitamin A《英文msh词典》Deficiency,Vitamin A [入口词] Deficiency,Vitamin A [主题词] Vitamin A Deficiency [英文释义] A nutritional condition produced by a deficiency of VITAMIN A in the diet,characterized by NIGHT BLINDNESS and other ocular manifestations such as dryness of the conjunctiva and later of the cornea (XEROPHTHALMIA). Vitamin A deficiency is a very common problem worldwide,particularly in developing countries as a consequence of famine or shortages of vitamin A-rich foods. In the United States it is found among the urban poor,the elderly,alcoholics,and patients with malabsorption. (From Cecil Textbook of Medicine,19th ed,p1179) |
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