anomaloscope


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anomaloscope

[ə′näm·ə·lə‚skōp]
(optics)
An optical instrument for testing color vision, in which a yellow light whose intensity may be varied is matched against red and green lights whose intensity is fixed.
References in periodicals archive ?
18 Ishihara test, D15 and anomaloscope are used for diagnosis of CVD.
For further diagnosis anomaloscope is used but it can only be used in healthcare settings.
In 1881, Lord Rayleigh introduced anomaloscope for scientific analysis of color defects (5).
Color vision tests for aviation: comparison of the anomaloscope and three lantern types.
Both exhibit a capacity to find a specific point of reference in the anomaloscope test (unlike those suffering from dichromacy who cannot settle on a single equilibrium point).
All were screened for normal colour vision by means of the Ishihara Pseudo-Isochromatic colour plates, the City University Colour Vision Test (CUCVT; Fletcher, 1980), the "Test para Identificacion de los Daltonismos" (TIDA [Test to Identify Colour-Blindness]; Lillo, 1996), and Rayleigh matches on an anomaloscope.
TABLE 1: Color Vision Deficient Groups Extent Selection Criteria Deutan Protan Mild anomalous Pass Farnsworth lantern, pass 5 5 trichromats Farnsworth-Munsell Panel D-15 Moderate anomalous Fail Farnsworth lantern, pass 5 5 trichromats Farnsworth-Munsell Panel D-15 Strong anomalous Fail Farnsworth-Munsell Panel 5 5 trichromats D-15 (but not dichromats or extreme anomalous trichromats (a)) Dichromats Match whole red-green range on 10 9 Nagel anomaloscope even after adaptation on Trendelenberg plate Note.
The Nagel anomaloscope was recommended to confirm the identification of protan deficiency if required.
In addition to the battery of chromatic clinical tests previously described, the protanopes' clinical status was confirmed using a Nagel anomaloscope (Tomey, AF-1).
Color vision was tested using the Ishihara Test for Color Blindness, the Nagel anomaloscope (Schmidt and Haensch, Berlin, Germany), the Farnsworth Dl 5 test (Psychological Corp.
If an anomaloscope is not available, the efficiency of a new test can be compared with that of a validated test.
All were screened for normal colour vision by means of the Ishihara Pseudo-Isochromatic colour plates, the City University Color Vision Test (CUCVT; Fletcher, 1980), the "Test para Identificacion de los Daltonismos" (TIDA [Test to Identify Colour-Blindness]; Lillo, 1996), and Rayleigh matches on an anomaloscope.