1. The value of Javal's ophthalmometer for the correction of astigmatism where marked amblyopia is present Author(s): Deynard, A. Britton (Adalbert Britton), 1849- author Publication: [New York?] : [publisher not identified], [1892?] Subject(s): Astigmatism -- therapyAmblyopia -- complicationsDiagnostic Techniques, Ophthalmological
2. 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 -- therapyAsthenopia -- etiology