An investigation into the sensitivity and specificity of iridology for detecting abnormalities in the female reproductive system: A cross-sectional observational study
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A 2025 observational study of 100 women reported 92% sensitivity and 56% specificity for iridology versus gynecologic ultrasonography. Blinding was not assured, and 44% of reference-negative subjects would be false positives; this does not establish a reliable diagnostic test.
The positive finding merits disclosure. Original publisher abstract accessed, not complete two-by-two tables; 2026 ophthalmic review flags lack of blinding.