Ophthalmoscope, by Ferrier, 56 Beresford Street, Camberwell, London, England, 1880-1900.
The ophthalmoscope is a simple, highly effective instrument used to view the interior of the eye. It was invented in 1851 by Herman von Helmholtz (1821-1894). Helmholtz reasoned an observer placing his eye in the path of light reflected from the back of a subject’s eye (through the pupil) could see the subject’s retina. Helmholtz used glass plates angled at 45 degrees to reflect sunlight into the eye. This example was made in England by instrument maker Ferrier. A ratchet mechanism rotates two wheels of lenses in front of a perforated mirror.
- Object Number:
- A664762 Pt1
overall (instrument): 174 mm x 42 mm 12 mm, 0.09kg
- furnishing and equipment
- tools & equipment
- ophthalmic equipment
- ophthalmic instrument
- Loan: Wellcome Trust
Cite this page
We encourage the use and reuse of our collection data.
Data in the title, made, maker and details fields are released under Creative Commons Zero
Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence
Download catalogue entry as json
Download manifest IIIF
Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.