Hertel Exophthalmometry Values in Mexican Adults (HERTEL-MX)
Hertel Exophthalmometry Values in Mexican Adults and Their Association With Demographic Factors and Systemic Diseases
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Background: Hertel exophthalmometry is the most commonly used method for measuring globe protrusion in clinical practice. Normal exophthalmometric values vary according to ethnicity, sex, age, and craniofacial anatomy; therefore, population-specific reference values are necessary for accurate clinical interpretation. Currently, normative data for Mexican adults are limited.
Objective: To establish normative Hertel exophthalmometry values in Mexican adults and to evaluate their association with demographic characteristics and systemic diseases.
Methods: This is a prospective observational study. Adult participants attending the Ophthalmology Department will be consecutively recruited after providing written informed consent. Hertel exophthalmometry measurements will be obtained using a standardized technique by trained examiners. Demographic information, including age and sex, as well as relevant medical history and systemic diseases, will be recorded. The primary outcome is the distribution of Hertel exophthalmometry values in the study population. Secondary analyses will assess associations between exophthalmometric measurements and demographic or systemic variables.
Expected Significance: The study will provide normative Hertel exophthalmometry values for the Mexican adult population and identify factors associated with physiological variations in globe protrusion. These findings may improve the clinical evaluation of patients with suspected orbital disease and facilitate interpretation of Hertel exophthalmometry measurements in routine ophthalmic practice.
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Contact
- Name: Roberto Ramirez Hernandez, MD, Ophthalmologist
- Phone Number: +525525137712
- Email: robert.rami.rr@gmail.com
Study Locations
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Mexico City
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Mexico City, Mexico City, Mexico, 94806
- Recruiting
- ✔ Instituto de Oftalmología Fundación Conde de Valenciana IAP
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Contact:
- Roberto Ramirez Hernandez
- Phone Number: 5525137712
- Email: robert.rami.rr@gmail.com
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
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.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
|---|---|
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Mexican Adult Participants
Adult Mexican participants undergoing standardized Hertel exophthalmometry and collection of demographic and medical history information for the establishment of normative exophthalmometric values and evaluation of associated factors.
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Standardized bilateral Hertel exophthalmometry performed using a Hertel exophthalmometer to measure globe protrusion.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Hertel Exophthalmometry Value
Time Frame: At baseline
|
Bilateral Hertel exophthalmometry measurements (millimeters) obtained using a standardized Hertel exophthalmometer.
Normative values will be estimated and summarized for the study population.
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At baseline
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Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- HERTEL-MX-2026-01
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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