C. Doria, “Searching for the Normal Vision. Measuring Visual Acuity in the 19th Century”, Med Histor, vol. 5, no. 2, p. e2021015, Sep. 2021, Accessed: Jul. 18, 2024. [Online]. Available: https://mattioli1885journals.com/index.php/MedHistor/article/view/9004