MAKE A MEME View Large Image George Mayerle test chart (1)..JPG en Double-sided a positive image of the test chart appears on one side a negative image on the reverse This record is for the negative image The color boxes at the bottom of the chart are applied colored ...
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Keywords: George Mayerle test chart (1)..JPG en Double-sided a positive image of the test chart appears on one side a negative image on the reverse This record is for the negative image The color boxes at the bottom of the chart are applied colored strips Mayerle ™s eye chart combined four subjective tests done during an eye examination Running through the middle of the chart the seven vertical panels test for acuity of vision with characters in the Roman alphabet for English German and other European readers and also in Japanese Chinese Russian and Hebrew A panel in the center replaces the alphabetic characters with symbols for children and adults who were illiterate or who could not read any of the other writing systems offered Directly above the center panel is a version of the radiant dial that tests for astigmatism On either side of that are lines that test the muscular strength of the eyes Finally across the bottom boxes test for color vision a feature intended especially according to one advertisement for those working on railroads and steamboats --NLM Hidden treasure 2013-09-25 12 30 35 Courtesy of the National Library of Medicine Images from the History of Medicine IHM http //ihm nlm nih gov/images/C06230 Also showcased in the book Hidden Treasure New York NY Blast Books 2012 p 137 HMD Prints Photos call number PP059701b map Mayerle George Custom license marker 2013 09 25 PD-USGov Uploaded with UploadWizard Eye charts
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