Can a glass of water or a change in posture spike your eye pressure?
NCT ID NCT00338065
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how changing your body position or drinking water can cause temporary spikes in eye pressure. Researchers will measure these changes in healthy volunteers and in people with glaucoma or autonomic dysfunction. The goal is to better understand what challenges the eye's natural balance.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Start date
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Jun 2006
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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10 to 90 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients with autonomic dysfunction * Patients with open-angle glaucoma * Patients with normal-pressure glaucoma * Normal subjects Exclusion criteria: * Medical students * Prisoners * Pregnant women
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Vanderbilt University
Nashville, Tennessee, 37232, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a tiny eye implant replace daily glaucoma drops?
- Smart contact lens could catch hidden eye pressure spikes
- Can a gene therapy shield the Eye's nerves from glaucoma?
- Can a new eye test match the gold standard for glaucoma?
- Which laser best tames glaucoma pressure?