Ophthalmoscope
notes: label: Description
content: In 1851, Hermann von Helmholtz, a German professor of physiology, devised an ophthalmoscope for examining the interior of an eye. This item is an example of the modification of that instrument introduced by Richard Liebreich (1830-1917), a German-Jewish ophthalmologist. It has one convex lens, four concave lenses, and two magnifying lenses of 2 and 3 inch focus, respectively.
label: Location
content: Currently not on view
topic: label: associated subject
content: Ophthalmology
setName: label: See more items in
content: Medicine and Science: Medicine
label: See more items in
content: Health & Medicine
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.314016.230.02
label: accession number
content: 314016
label: catalog number
content: 314016.230.02
objectType: label: Object Name
content: Ophthalmoscope
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: rubber, hard(?) (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: black (overall color)
label: Measurements
content: scope: 12.3 cm x 4 cm x .8 cm; 4 27/32 in x 1 9/16 in x 5/16 in
label: Measurements
content: large lens: 3 cm x 3 cm x .2 cm; 1 3/16 in x 1 3/16 in x 3/32 in
label: Measurements
content: small lens: 2 cm x 2 cm x 3/32 in; 25/32 in x 25/32 in x .254 cm