Takagi MT318 Ophthalmometer Instruction Manual

Catalogue Number: 1440
Takagi MT318 Ophthalmometer Instruction Manual
Category: Papers
Sub-Category: Manual, for instruments etc
Corporation: Takagi Mfg Co Ltd
Year Of Publication/Manufacture: c1975
Time Period: 1940 to 1999
Place Of Publication/Manufacture: Nakano-City, Nagano, Japan
Publisher/Manufacturer: Takagi Manufacturing Co
Description Of Item: Instruction Manual for Takagi Javal Schiotz keratometer (ophthalmometer). 8 pages. 255mm x 180mm. The instrument itself is held by the Kett Museum. See Catalogue No 1106
Historical Significance: The Javal Schiotz type keratometer (or ophthalmometer) uses two self illuminated mires, one a red square, the other a green staircase design, to determine the radius of curvature of the cornea. It uses a variable image size and two positions to measure corneal curvature, whereas Bausch & Lomb type keratometers use a fixed object size and measures from one position.In 1881, Louis Emile Javal (1839-1907) & Hjalmar August Schiotz (1850-1927) first detailed their ophthalmometer in "Un opthalmometre pratique", in Annales d'Oculistique, Paris 1881, 86:5-21.
How Acquired: Donated by David Glennie, Karingal Optical, Frankston
Date Acquired: 01.03.2010
Condition: Very good
Location: Archive office. Pamphlet and ephemera filing cabinet. Drawer 3

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