Ultrasound reveals normal optic nerve measurements in healthy taiwanese adults

NCT ID NCT04600570

First seen Jul 20, 2026 · Last updated Jul 21, 2026 · Updated 1 time

Summary

This study uses ultrasound to measure the diameter of the optic nerve sheath in healthy Taiwanese adults aged 20 and older. The goal is to establish normal reference values and identify factors like age or body size that may influence these measurements. The findings could help doctors better diagnose conditions that increase pressure inside the skull.

What this could mean

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

Active substance
ultrasound measurement of the optic nerve sheath diameter
What this could lead to
If successful, this study could establish normal reference values for optic nerve sheath diameter in Taiwanese adults, aiding future diagnosis of conditions like elevated intracranial pressure.
What could go wrong
This is an observational study with a small, single-ethnicity sample, so results may not apply to other populations or clinical settings.

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As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Department of Emergency Medicine, National Taiwan University Hospital

    RECRUITING

    Taipei, Taiwan