Normal Hertel Exophthalmometry Values in Mexican Adults
Official title: Hertel Exophthalmometry Values in Mexican Adults and Their Association With Demographic Factors and Systemic Diseases
Run by Instituto de Oftalmología Fundación Conde de Valenciana · NCT07705061 · Data updated 2026-11-12
This study tests normal Hertel exophthalmometry values in Mexican adults to see how they relate to age, sex, and systemic diseases.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 300 (estimated) |
| Sponsor | Instituto de Oftalmología Fundación Conde de Valenciana Academic / other |
| Locations | 1 site (Mexico City, Mexico City) |
| Status | Recruiting |
| Started | April 21, 2026 |
| Main results expected | December 28, 2026 |
| Study ends | December 28, 2026 |
| Registry record updated | July 15, 2026 |
| Trial ID | NCT07705061 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal participants are Mexican adults aged 18 or older who can undergo bilateral Hertel exophthalmometry and provide informed consent, including those with or without systemic diseases.
✕Probably not a fit
Patients with active thyroid eye disease or orbital conditions that affect measurements may not benefit from the normative values.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a prospective observational study in Mexican adults to establish population-specific reference values for Hertel exophthalmometry. Trained examiners will measure globe protrusion using a standardized Hertel exophthalmometer and collect demographic and medical history data. The primary outcome is the distribution of exophthalmometric measurements; secondary analyses explore associations with age, sex, and selected systemic diseases. The results will provide normative values to aid clinical interpretation of orbital assessments in the Mexican population.
Why it matters
Potential benefit: If successful, the study could provide clinicians with tailored reference values to improve detection and assessment of orbital diseases in Mexican adults.
How similar studies have gone: Similar efforts have established population-specific normative data for exophthalmometry in other groups, supporting the feasibility of this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Adults aged 18 years or older. * Mexican participants or individuals who self-identify as Mexican. * Ability to understand the study procedures and provide written informed consent. * Ability to undergo bilateral Hertel exophthalmometry. * Participants with or without previously diagnosed systemic diseases. Exclusion Criteria: * Active thyroid eye disease * History of orbital trauma or orbital fracture. * Previous orbital surgery, orbital decompression, or surgery that may alter globe position. * Presence or history of an orbital tumor, orbital inflammation, or orbital infection. * Craniofacial abnormalities or facial asymmetry that may interfere with Hertel exophthalmometry. * Ocular or eyelid conditions that prevent accurate positioning or measurement with the Hertel exophthalmometer. * Inability to cooperate with the examination or obtain a reliable exophthalmometry measurement.
Where it's running
-
✔ Instituto de Oftalmología Fundación Conde de Valenciana IAP
Mexico City, Mexico City, Mexico Recruiting
Study contacts
- Study coordinator: Roberto Ramirez Hernandez, MD, Ophthalmologist
- Email: robert.rami.rr@gmail.com
- Phone: +525525137712
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.