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Test Types
TEST CHARTS
near vision test
American Optical Company
North America: USA
Early 20th c.
wood; cardboard
overall: 237 mm x 147 mm

Reading test types consisting of a printed card mounted within a dark wooden holder. Printed surface features seven paragraphs of graduated text corresponding to a prescription of 0.50 D, 0.75 D, 1.00 D, 1.25 D, 1.50 D, 1.75 D, 2.00 D. The passages are excerpts from the book 'Two Years Before The Mast' by Richard Henry Dana Jr (1840).


2012.328

Gift of Glasgow Caledonian University, 2012



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