Maddox Wing Test

Catalogue Number: 4076
Maddox Wing Test
Category: Equipment
Designer/inventor: Dr Ernest Maddox
Time Period: 1940 to 1999
Publisher/Manufacturer: Not indicated on instrument
Description Of Item: Hand held crackle finish black metal instrument with a folding handle. The eyepieces have slit apertures with double drop lens cells to hold any prescription. A test to measure near heterophoria, it uses vertical and horizontal prism dioptre tangent scales printed on a cardboard sheet attached to the back plate 30 cm from the eyepieces. The scales are viewed with each eye separately by means of 2 black septa .Thee right eye sees the scale while the left eye sees a white arrow which measures the horizontal heterophoria, and a red arrow for vertical heteophoria, which can also be rotated to measure a cyclophoria. Instrument size is 300mm x 155mmTemporarily located west wall archive office book shelf
Historical Significance: his test was described by Ernest Maddox in 1913. See Maddox EE: The wing test for heterophoria. Trans Ophthal Soc UK 1913; 33:22-227. Maddox was an English ophthalmologist (1863 - 1933) who importantly elucidated the nature of binocular fusion and the components of convergence. He invented the Maddox rod and the Maddox wing test, the cheiroscope and the V test for astigmatism. He was ophthalmic surgeon at the Royal Victoria Hospital, Bournemouth, and formerly Assistant Ophthalmic Surgeon in the Royal Infirmary Edinburgh and Syme Surgical Fellow at Edinburgh University. He wrote several important books between 1898 and 1915 (See Cat Nos 107, 206, 504).
How Acquired: Donated by Elizabeth Hatfield
Date Acquired: 13/10/2019
Condition: good
Location: Archive room. West wall. Unit 4 Overhead display

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