The George Young Threshold Test

Catalogue Number: 2584
The George Young Threshold Test
Category: Equipment
Sub-Category: Visual Acuity, Contrast sensitivity tests
Designer/inventor: George Young
Year Of Publication/Manufacture: 1950's
Time Period: 1940 to 1999
Place Of Publication/Manufacture: London, UK
Publisher/Manufacturer: Raphael's Ltd
Description Of Item: Spiral bound booklet with black leatherette cover and cardboard pages. Includes a foreword by Montague L Hine and a desciption of the use of the test. The test plates each show one round colour sample of black, red, green, blue or yellow of graded intensities. Owner's name on first page 'D G Odgers'. Size: 165mm W x 112mm H x 17mm D.
Historical Significance: George Young first developed his threshold test in 1918.
How Acquired: Donated by Dawn Odgers
Date Acquired: April 2015
Condition: Very good, pages yellowed.
Location: Archive room. West wall. Unit 3 Drawer 2

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