anomaloscopen.
Optics.
An apparatus invented by W. A. Nagel (1870–1911) for measuring abnormality in colour vision. Apparatus of this kind was first announced by Nagel in 1898 but he did not at first call it an ‘Anomaloskop’.
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the world > health and disease > healing > ophthalmology or optometry > [noun] > instrumental examination or measurement of eye > instruments used in
optometer1738
opsiometer1842
ophthalmoscope1856
auto-ophthalmoscope1863
ophthalmometer1864
phacoidoscope1864
strabismometer1869
autoscope1873
strabometer1874
perimeter1875
leucoscope1883
retinoscope1883
phacoscope1886
phorometer1888
campimeter1889
prisoptometer1890
scotometer1890
skiascope1892
transilluminator1906
slit lamp1922
anomaloscope1923
gonioscope1925
synoptophore1934
1923 L. C. Martin Colour x. 150 Nagel's anomaloscope is a simple instrument similar to a direct-vision spectroscope, in which a yellow may be matched by a mixture of red and green. The brightness of the yellow and the ratio of red to green are indicated by the readings on two micrometer heads. The numerical divergences from the normal readings are taken as arbitrary measures of the ‘anomaly’.
1929 W. D. Wright Re-det. Trichr. Mixture Data 27 So-called anomalous matches made on the Nagel anomaloscope.
1962 Lancet 15 Dec. 1269/1 Anomaloscope examination..reveals deviations from normal.
This entry has not yet been fully updated (first published 1972; most recently modified version published online November 2010).
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n.1923