|Definition - An inability to read caused by physical impairment.|
Etymology - The word derives from the Greek a, not + lexis, word.
Oxford English Dictionary - Its first citation is from 1878:
"It is … by no means easy to say how much of the alexia and paralexia is to be ascribed to the hemiopia."
( G. B. Shattuck tr. von Ziemssen's Cycl. Med. XIV. 774)