Forschungsinformationssystem Universität Greifswald

Klinke T*¹, Hannak W, Boening K, Jakstat H

1 - Zentrum für Zahn-, Mund- und Kieferheilkunde / Poliklinik für Zahnärztliche Prothetik, Alterszahnheilkunde und Medizinische Werkstoffkunde

Objectives. Visual color differentiation in clinics research requires color competence (CC) participants. The Ishihara Color Charts (ICC) has established themselves as the standard for CC screening of color vision deficiencies (CVD). However, the extent to which the results can be compared with a presentation of the color charts on a smartphone display (SD) is currently unknown. The aim of this in vitro study was to determine the sensitivity and specificity of the Ishihara color deficiency test depending on the presentation mode. Methods. Dental students (female N=28, male N=10, mean age was 23.5±2.65 years, median 23.0±13.0 years). Students evaluated 25 Ishihara test plates on their SD (N=38) or/and a calibrated monitor (HP monitor, 22-inch, N=18). The median size of the SD was 6.0 inches. Data sets with more than 2 failed charts were scored. Results. When the Ishihara test charts were presented on a PC-screen the sensitivity was 94.4%, and the specificity was 82.4% (0 mistakes: N=14, <3 failures: N=3, 14 false answers: N=1). On the SD a sensitivity of 96.0% and a specificity of 94.7% was calculated (89.5% were correct, 4 participants (10.5%) <3 errors, and one participant made 21 errors). No significant difference between both display modi (PC vs. SD) was evaluated (p>0,05). Conclusions. The presentation of ICC on a SD is useful and can be used for the investigation of a possible CVD of large groups. Comparable results to data projection can be achieved with a high degree of certainty. Clinical Significance. For CVD screening of larger groups, e.g., students in preclinical training as part of CC training, the presentation of ICC on the SD can be used. This research was able to demonstrate that the sensitivity and specificity of the usual presentation method (Ishihara's booklet or data projection) is comparable.