Part of the Advanced Roadside Impaired Driving Enforcement and Drug Recognition Evaluator assessment (from the International Association of Chiefs of Police) for cannabis intoxication includes looking for eyelid tremor during the modified Romberg test. In a cohort study of cannabis users vs non-users, was eyelid tremor a reliable finding of cannabis intoxication?
Eyelid tremor was not a reliable finding. In fact, those with no cannabis use demonstrated more eyelid tremor than those who used cannablis daily.
Wang, G. S., Kosnett, M., Subramanian, P., Wrobel, J., Ma, M., Brown, T., … Brooks-Russell, A. (2024). Accuracy and replicability of identifying eyelid tremor as an indicator of recent cannabis smoking. Clinical Toxicology, 62(1), 10–18. https://doi.org/10.1080/15563650.2024.2310154