Mayerle’s Lithographed International Test Chart, 1907

Posted on August 3, 2023

Detail from a chart including Chinese, Russian and Hebrew characters, images of a human eye and an American flag, and color blocks in blue, green, and orange.By Stephen P. Rice ~ Originally published in Hidden Treasure: The National Library of Medicine, 2011. This multilingual eye-test chart, published in 1907, was the

Continue reading

Source: NLM

Leave a Reply

Your email address will not be published. Required fields are marked *