Card printed on one side with pattern of radiating lines for assessing astigmatism

Made:
1880-1940

Card printed on one side with pattern of radiating lines for assessing astigmatism, printed by Thomas Armstrong and Brother of Manchester, 1880-1940

Details

Category:
Ophthalmology
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A625231
Materials:
paper and cloth
type:
astigmatic fan charts