Subjects: Astigmatism -- therapy / Authors: Risley, Samuel D. (Samuel Doty), 1845-1920 author - Digital Collections - National Library of Medicine Search Results

Start Over Subjects Astigmatism -- therapy ✖ Authors Risley, Samuel D. (Samuel Doty), 1845-1920 author ✖

1. The relative importance of astigmatism in the production of asthenopia: second paper

Author(s):: Risley, Samuel D. (Samuel Doty), 1845-1920 author
Publication:: [St. Louis?] : [publisher not identified], [1893?]
Subject(s):: Astigmatism -- therapy
Asthenopia -- etiology