I've seen recent reports on the use, now, of red and green filters to help people with reading problems: I think it was because it somehow settles the way lettering is seen on white paper for some people previously diagnosed as dyslexic - so maybe this James Ayscough was exploring on similar lines? Visors, worn on the forehead, were also used in the 19th and early 20thc,though I think they were to shield eyes from candles or other artificial light when reading - you still see them on old cartoons, 1930's Frank Capra films etc. with newspaper editors always wearing them.
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timeasmymeasure
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Date: 2008-11-12 11:50 pm (UTC)Visors, worn on the forehead, were also used in the 19th and early 20thc,though I think they were to shield eyes from candles or other artificial light when reading - you still see them on old cartoons, 1930's Frank Capra films etc. with newspaper editors always wearing them.