The idea that "night blindness" is caused only by lack of vitamin A, and can be cured by eating carrots, is stylish but false according to a group of scientists in Edinburgh. They declare that most night blindness among soldiers is psychological.
In the last two issues of the British Medical Journal, Dr. Erich Wittkower, Psychologist Thomas Ferguson Rodger and collaborators have set down the results of their investigations of this wartime ailment.
Dr. Wittkower and Major Rodger picked at random 52 soldiers who were helpless in the dark; some of them had proved it by wrecking cars. "Most of the men," said...
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