Recent studies demonstrate that modern diagnostic tests, including smartphone and tablet-based applications, can accurately and efficiently detect and classify color-vision deficiencies.
The claim is specific and falsifiable, passing Step 0. Multiple recent peer-reviewed papers ([1], [2], [6], [10]) provide strong empirical support showing that novel, subtle, and digital diagnostic tests (such as smartphone and tablet-based assessments) can accurately detect and diagnose color-vision deficiencies with high sensitivity and specificity. There are no refuting papers.