The Clement Clarke synoptophores

Catalogue Number: 1875
The Clement Clarke synoptophores
Category: Papers
Sub-Category: Ophthalmic product brochures
Corporation: Clement Clarke Ltd
Year Of Publication/Manufacture: mid 1960s
Time Period: 1940 to 1999
Place Of Publication/Manufacture: London
Publisher/Manufacturer: Clement Clarke Ltd
Description Of Item: Quarto size product brochure for Clement Clarke synoptophores, printed paper 2-colour cover. 14 pages including cover, photographs of synoptophores, stamped 'JR Beck and Co, Mason Buildings, Sugden Place, Melbourne MF 8709'. It also includes a separate sheet giving information on the space coordinator an instrument using Haidinger's brushes for the treatment of eccentric fixation.
Historical Significance: The synoptophore was a much used instrument for orthoptic diagnosis and treatment in the strabismus and other binocular disorders in the mid 20th C. It is a technical elaboration of the Worth amblyoscope devised about 1900 by Claude Worth (1869-1936), a London based ophthalmologist, which was based on an earlier similar device called 'fusion tubes' invented by Priestly-Smith in 1896. Black added the vertical adjustment in 1906 so it became the Worth-Black amblyopscope. It fell out of use in the second half of the 20th C in favour of simpler devices that could be used for home-training as well as in the consulting room, such as those devised by the Bernell Corporation.
How Acquired: Ex Nathan Library
Condition: Fair
Location: Archive office. Pamphlet and ephemera filing cabinet. Drawer 5

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