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A rare, early Helmholtz-pattern opthalmoscope, c.1852 (brass & ebony instrument with glass lenses in silk-lined...

IMAGE number
CH3741227
Image title
A rare, early Helmholtz-pattern opthalmoscope, c.1852 (brass & ebony instrument with glass lenses in silk-lined leatherette case)
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Location
Private Collection
Medium
brass and ebony instrument with glass lenses in silk-lined leatherette case
Date
c. 1852 AD (C19th AD)
Dimensions
175x83x43 cms
Image description

A Helmholtz-pattern lacquered- and oxidised-brass ophthalmoscope circa 1852, unsigned, the eyepiece frame with removable section for correction lenses, protective felt washer and 10mm aperture, 56° angled frame holding three plane parallel glass plates, with ebony handle, seven of eleven corrective lenses, contained in purple plush and cream-silk lined leatherette case. One of the greatest minds of the nineteenth century, the German physician and physicist Hermann Ludwig Ferdinand von Helmholtz (1821-94) worked in the fields of conservation of energy, sensory physiology, ophthalmic optics, acoustics and aesthetics, and electromagnetism. In 1850, Helmholtz invented the ophthalmoscope and revolutionised ophthalmoscopy.

Photo credit
Photo © Christie's Images / Bridgeman Images
Image keywords
medicine / scientific / science / lenses / funduscope / optical / case / funduscopes / opthalmoscope / opthalmoscopes / helmholtz-pattern / lens / instruments / medical / cases / ophthalmoscopy / hermann helmholtz / instrument / hermann ludwig ferdinand von helmholtz

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Asset - General information
Largest available format 2516 × 3221 px 5 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 2516 × 3221 px 213 × 273 mm 5.1 MB
Medium 800 × 1024 px 68 × 87 mm 794 KB

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