An Interactive Annotated World Bibliography of Printed and Digital Works in the History of Medicine and the Life Sciences from Circa 2000 BCE to 2024 by Fielding H. Garrison (1870-1935), Leslie T. Morton (1907-2004), and Jeremy M. Norman (1945- ) Traditionally Known as “Garrison-Morton”

16077 entries, 14165 authors and 1948 subjects. Updated: October 12, 2025

SNELLEN, Hermann

1 entries
  • 5890

Probebuchstaben zur Bestimmung der Sehschärfe.

Utrecht: P. W. van de Weijer, 1862.

Snellen’s test-types (“Optotypi”) which soon gained acceptance in all civilized countries. Digital facsimile from Google Books at this link.



Subjects: Optometry › Vision Tests