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Comparision of the Results of Linear and Circular Arrangement of the Hue Arrangement-test Roth 28-hue (E) Desaturated

1Erb C., 2Mocz-Richter A., 2Adler M., 2Bayer A., 2Zrenner E.,
1Medizinische Hochschule Hannover, Augenklinik (Hannover)
2Eberhard-Karls-Universität Tübingen, Universitäts-Augenklinik, Abt. II, Pathophysiologie des Sehens u. Neuroophthalmologie (Tübingen)

Purpose: To investigate the influence of a circular and a linear arrangement on the results of the hue arrangement test Roth 28-hue (E) desaturated.
Methods: In a change-over study, 19 healthy subjects (m:f=6:13; mean age=32±11 years) started colour vision testing with the circular test first, followed by the linear test, while another 19 healthy subjects (m:f=6:13; mean age=29±10 years) did the tests in a reverse sequence. Colour vision, examined by the hue arrangement test, Roth 28-hue (E) desaturated, was measured monoculary under standard conditions in both eyes. The background was a black cardboard; illumination was provided by fluorescent light sources with a balanced spectral distribution and a colour-rendering index of 93 (Osram L36W/12LDL Daylight).
Results: No statistical significant difference could be measured in the error scores and the colour axis between the circular and the linear arrangements. However, 81% of the subjects of each group preferred subjectively the circular arrangement.
Conclusions: The favoritism of the circular arrangement of the caps is perhaps a hint for the subconscious idea of the circle-nature of colours. Especially in patients with acquired colour-vision disturbances with several follow-up´s as well as in children, the more pleasant circular test arrangement should be considered.