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Using customized pseudoisochromatic plates for detecting chosen forms of dichromacy

Laskowski M.

Journal of KONES

2012

Vol. 19, No. 1

245-250

Pseudoisochromatic plates have been used for detecting certain types of colourblindness (especially protanopia and deutanopia) for almost a century. Nowadays, due to its simplicity and relatively low examination cost, this method is widely used throughout the world. On the other hand, it is often criticized because of potential ambiguity and inaccessibility for certain groups of patients. This paper covers the analysis of different versions of currently used pseudoisochromatic plates. A tool for generating customized plates for detecting different types of dichromacy in certain user groups is also presented. Colour vision disorder may prevent a person from engaging in certain occupations, especially when colour recognition is important either for safety or essential for the work itself. Being aware of having colour vision disorder is important not only for people with professions connected with colour-based signals. Pseudoisochromatic plates – types and usage, pros and cons of the described method, proposal of the new diagnostic method - generating customized pseudoisochromatic plates, results of the preliminary research are presented in the paper.