Snellen's test type, United Kingdom, 1901-1930
- Made:
- 1901-1930 in United Kingdom
- maker:
- Unknown
This image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
License this image for commercial use at Science and Society Picture Library
License
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Snellen's test type for distance, card, British, early 20th century
Located at the back of this display is a chart of letters used to test a person’s sight at various distances. With good vision, the patient should be able to read the letters at a distance of six metres.
The chart was developed in the 1850s by Hermann Snellen (1834-1908), a Dutch ophthalmologist, and is still used today. The letters, from largest to smallest, are all a precise shape and size. The board is shown here in a display of sight testing in the 1930s.
Details
- Category:
- Ophthalmology
- Object Number:
- 1977-627/25
- Materials:
- card, paper (fibre product), textile and metal (unknown)
- Measurements:
-
overall (lying flat): 23 mm x 317 mm x 564 mm, 0.46 kg
- type:
- snellen test types
- credit:
- Spread Eagle Antiques
