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[Web-based analysis of Stilling's color plates]
1Augenklinik des Helios Klinikum Berlin Buch, Schwanebecker Chaussee 50, 13125, Berlin, Deutschland, joern.kuchenbecker@helios-kliniken.de.
Summary
The Stilling color plates showed highly variable diagnostic quality in a web-based test, with significantly more errors compared to Ishihara plates. Some Stilling plates may still be useful for color vision deficiency screening.
Area of Science:
- Ophthalmology
- Optometry
- Genetics
Background:
- Pseudoisochromatic plates are standard for screening congenital color vision deficiencies.
- Web-based testing offers an efficient method to evaluate diagnostic quality of color vision plates.
Purpose of the Study:
- To assess the diagnostic quality of digitized Stilling color plates using a web-based platform.
- To compare the performance of Stilling plates against Ishihara plates.
Main Methods:
- 16 digitized Stilling color plates (11th edition, 1907) were integrated into a web-based test.
- A total of 518 subjects participated in the online test.
- Chi-squared test was employed to compare error rates between Stilling and Ishihara plates.
Main Results:
- Stilling plates showed a wide range in correct recognition (5.2%–97.7%), while Ishihara plates performed better (64.9%–100%).
- Participants made significantly more errors with Stilling plates (3038 false answers) than with Ishihara plates (1511 false answers) (p < 0.001).
- Error rates for Stilling plates were higher even among participants with multiple errors.
Conclusions:
- The diagnostic quality of the tested Stilling color plates was highly variable.
- Stilling plates exhibited a higher incidence of errors compared to Ishihara plates, often due to symbol ambiguity.
- Certain Stilling plates may be suitable for inclusion in future color vision test editions.
