What's a normal pupil? large study aims to find out in ICU patients

NCT ID NCT02804438

Recruiting now Knowledge-focused Sponsor: University of Texas Southwestern Medical Center Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study will collect pupil measurements from 1,000 patients in the neuro-intensive care unit using a device called a pupillometer. The goal is to establish what normal pupil size, reactivity, and neurological pupil index values are for critically ill patients. By gathering this data, researchers hope to give doctors a better baseline for spotting abnormal pupil responses that may signal brain problems.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If successful, this could help doctors better interpret pupillometer readings in critically ill patients, improving detection of neurological changes.
What could go wrong: This is an observational study that only collects data—it does not test a treatment. The results may not apply to all patient groups or settings.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for CRITICAL ILLNESS are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

Critical Illness peripheral neuropathy

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CRITICAL ILLNESS NEUROPATHY

Contacts and locations

Locations

Maria E Denbow
RECRUITING

Dallas, Texas, 75390, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.