- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00837226
Effects of Weight Loss From Bariatric Surgery on Intraocular Pressure (IOP) (IOP)
December 4, 2015 updated by: Robert Feldman, The University of Texas Health Science Center, Houston
The Effects of Weight Loss From Bariatric Surgery on Intraocular Pressure
The purpose of this study is to determine if there is an effect on the eye pressure from extreme weight loss by bariatric procedures.
The hypothesis is that excess fat in the orbit of the eye compresses on the outflow system, which causes an elevated eye pressure.
This can have many consequences, including the risk for glaucoma.
We hope to establish if there is an effect between eye pressure and weight.
Study Overview
Status
Withdrawn
Conditions
Study Type
Observational
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Texas
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Bellaire, Texas, United States, 77401
- Minimally Invasive Surgeons of Texas
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Sampling Method
Non-Probability Sample
Study Population
Patients who are included in this study will have been evaluated for bariatric surgery and will meet the current eligibility requirements for bariatric surgery.
These requirements include that the patient must have failed dietary therapy and have a BMI(body mass index) greater than 40 kg/m2 without associated comorbidities or have a BMI greater than 35 kg/m2 with associated comorbidities.
Eleven subjects who will be evaluated for bariatric surgery but choose not to undergo the surgery will be recruited to serve as controls and to verify the changes in intraocular pressure (IOP) are due to the weight loss.
It is expected that the IOP of the control patients will be relatively stable, assuming the patients will not have any other surgery or intervention which could affect the IOP.
Description
Inclusion Criteria:
- Age ≥ 18
- Written informed consent obtained
- BMI > 40 kg/m2 without associated comorbidities or > 35 kg/m2 with associated comorbidities. In the normal indication for routine bariatric surgery, comorbidities include hypertension, type II diabetes, venous stasis, sleep apnea, polycystic ovary syndrome, pseudotumor cerebri, nonalcoholic steatohepatitis, gastroesophageal reflux disease, coronary artery disease, degenerative joint disease, cancer, and hypercholesterolemia.
Exclusion Criteria:
- Current use of systemic steroids
- Any systemic medication which is unstable and can affect IOP
- History or evidence of glaucoma
- Any ocular trauma or ocular surgery
- Outside normal range of corneal thickness (500-600 microns)
- Unable to follow-up for 3 years
- Participating in any investigational device or medication study within 30 days of baseline
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
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Study group-Bariatric procedure performed
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Control group: No bariatric procedures
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
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Intraocular pressure
Time Frame: Data will be recorded the same day when a patient comes to the clinic.
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Data will be recorded the same day when a patient comes to the clinic.
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Robert Feldman, M.D., The University of Texas Health Science Center, Houston
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
September 1, 2010
Primary Completion (Anticipated)
September 1, 2010
Study Completion (Anticipated)
September 1, 2010
Study Registration Dates
First Submitted
February 4, 2009
First Submitted That Met QC Criteria
February 4, 2009
First Posted (Estimate)
February 5, 2009
Study Record Updates
Last Update Posted (Estimate)
December 8, 2015
Last Update Submitted That Met QC Criteria
December 4, 2015
Last Verified
December 1, 2015
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 08-0499
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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