- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03658239
Corneal Biomechanics Study
The Investigation of Corneal Biomechanics Through the Changes in the Intraocular Pressure
Study Overview
Detailed Description
Study Type
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria
A person is eligible for inclusion in the study if he/she:
- Is an adult between the ages of 18 and 55.
- Is under 250 pounds.
Exclusion Criteria
A person will be excluded from the study if he/she:
- Is under the age of 18 or over the age of 55 yrs.
- Weighs more than 250 pounds.
- Has clinically significant dry eye.
- Has glaucoma.
- Has hypertension.
- Has prior CVA.
- Has cardiovascular disease.
- Has lower extremity joint injury, damage, or replacement.
- Has baseline bradycardia.
- Has any orthopaedic injuries.
- Is pregnant.
- Has hiatal and ventral hernias.
- Has vertigo.
- Has acid reflux (GERD).
- Is undergoing myopia control treatment (e.g. atropinisation, Ortho-K, bifocal contact lenses etc.).
- Has conditions or has undergone procedures resulting in significant corneal irregularity (e.g. keratoconus, corneal transplant, etc.). This does not include astigmatism and basic refractive errors.
- Has any ocular or systemic diseases that, in the opinion of the PI/SI, would interfere with obtaining a measurement.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Experimental
Subjects will undergo 4-5 visits total over the course of 6 months. There will be 3-4 visits that will be done at the Flaum Eye Institute. During these sessions the subject will be measured with a stationary topographer (GALILEI G4), with a rotatable topography measurement (Oculus Topographer) and a Tonometer. The subject's heart rate and blood pressure will also be measured (using a commercially available blood pressure and heart rate meter). The GALILEI measurement will only be done once. The rest of the measurements will be done up to 4 times. Once at the start of the study session then, after the subject has been inverted using a commercially available inversion table to first 135 degrees, then 150 degrees and finally to 165 degrees. The blood pressure and heart rate will be monitored to ensure subject safety. There will also be one visit at the Massachusetts General Hospital. The visit will be 2 hours and will involve a Brillouin Microscopy measurement. |
Inversions will be done while the subject is on the inversion table.
The subject will be inverted to 135, 150 and 165 degrees.
There inversion will not last longer than 3 minutes at a time.
The inversion will be terminated if the subject's blood pressure drops below 50 mmHg diastolic or if the subject's blood pressure increases more than 50 mmHg systolic.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Corneal Surface Topography Measurement
Time Frame: 6 months
|
Corneal Surface Topography measurement will be collected at each of the 3-4 study visits at the Flaum Eye Institute.
The numerical data generated will be analyzed and compared within each subject as well as across subjects.
|
6 months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Geunyoung Yoon, PhD, University of Rochester
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
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
Additional Relevant MeSH Terms
Other Study ID Numbers
- 71844
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
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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