Application of Blue Filters Increases the Usefulness of Moreland Test in Anomaloscopic Color Vision Assessment for Blue–Green Color Range

Krzysztof Piotr Michalak, Jacek Zabel, Jan Olszewski, Paulina Wojtyła-Buciora and Anna Przekoracka-Krawczyk
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Krzysztof Piotr Michalak: Laboratory of Vision Science and Optometry, Faculty of Physics, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego Street 2, 61-614 Poznan, Poland
Jacek Zabel: Laboratory of Vision Science and Optometry, Faculty of Physics, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego Street 2, 61-614 Poznan, Poland
Jan Olszewski: Department of Bionics and Experimental Medical Biology, Karol Marcinkowski University of Medical Sciences in Poznan, Parkowa Street 2, 60-775 Poznań, Poland
Paulina Wojtyła-Buciora: Department of Health Sciences, Calisia University-Kalisz, Nowy Swiat Street 4, 62-800 Kalisz, Poland
Anna Przekoracka-Krawczyk: Laboratory of Vision Science and Optometry, Faculty of Physics, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego Street 2, 61-614 Poznan, Poland

IJERPH, 2021, vol. 18, issue 14, 1-14

Abstract: The effect of blue light filters on the anomaloscopic examination was analyzed. Thirty subjects (18–43 y, 20 female, 10 male) without color vision disorders were examined in 4 filter conditions: no filter (F-0), Blue Control Hoya (F-BC), Med-1 JZO (F-Med1) and 450 Eschenbach (F-450). Both Rayleigh test (red–green axis) and Moreland test (blue–green axis) were performed. Application of F-BC filter shows negligible effect on color vision perception in both tests. Contrary to this, the application of strong F-450 filter causes significant shift in Moreland test towards tritanopy and the decrease in correlations of Moreland parameters with Rayleigh test parameters. The application of medium strong F-Med1 filter causes the slight shift in Moreland test towards the center of the Moreland scale and increases the Spearman correlations between Moreland and Rayleigh test parameters. This observation suggests that the about 15–40% reduction of blue diode intensity in the Moreland test may be beneficial in detecting mild changes in color vision perception in the blue-green axis and may improve its usefulness in evaluating the color vision perception disorders accompanying different illnesses, such as diabetes, glaucoma, neuritis optica, or cataract. The discussion concerning the modifications of Moreland test construction is also presented.

Keywords: color vision; anomaloscope; Moreland; Rayleigh (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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