Takagi MT318 Ophthalmometer

Catalogue Number: 1106
Takagi MT318 Ophthalmometer
Category: Equipment
Sub-Category: Keratometer Ophthalmometer
Designer/inventor: L E Javal & H A Schiotz
Year Of Publication/Manufacture: c1975
Time Period: 1940 to 1999
Place Of Publication/Manufacture: Nakano, Japan
Publisher/Manufacturer: Takagi Manufacturing Co
Description Of Item: Takagi Javal Schiotz keratometer (ophthalmometer). Table mounted with joystick control & chin & brow rest. Grey & black painted metal.Imprint: MODEL MT318, No 8249, Takagi Mfg Co, Nakano, JapanH: 45cm x W: 32 cm D: 38 cm
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 fixed image size and two positions to measure corneal curvature, whereas Bausch & Lomb type keratometers use a fixed object size and measure 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: 14.02.2009
Condition: Very good
Location: Archive room. East wall Unit 2 Cupboard

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