Snellen's test type, United Kingdom, 1901-1930

Made:
1901-1930 in United Kingdom
maker:
Unknown

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Sight testing in the 1930s. Room set display in Lower Wellcome Gallery of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group
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, metal (unknown), paper (fibre product) and textile
Measurements:
overall (lying flat): 23 mm x 317 mm x 564 mm, 0.46 kg
type:
snellen test types
credit:
Spread Eagle Antiques

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