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Back pain vs. graft success: how long must you lie flat after eye surgery?
NCT ID NCT07373821
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares lying on your back for 1 day versus 5 days after a specific type of corneal transplant (DMEK) for Fuchs dystrophy. Researchers want to see if a longer period helps the transplant stay attached and reduces the need for extra procedures. About 102 participants will be randomly assigned to one of the two groups and monitored with eye exams and movement sensors.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could show that a shorter period of lying on your back after corneal transplant is just as effective, making recovery more comfortable.
- What could go wrong
- This is a small, early-stage trial focused on a procedural detail, not a new treatment. Results may not change standard practice and could show no difference between groups.
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 102 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Mar 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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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: Fuchs Endothelial Corneal Dystrophy Bullous Keratopathy Exclusion Criteria: Comorbidities preventing supine positioning
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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
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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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Department of Ophthalmology, University Hospital Heidelberg
RECRUITINGHeidelberg, 69120, Germany
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Eye drops may shield the cornea after cataract surgery
- Can eye drops offer a new way to treat fuchs dystrophy?
- Fuchs dystrophy and cataract surgery: does the cornea behave differently?
- Which corneal transplant is best? 1,000-Patient study aims to find out
- Eye surgeons hunt for the perfect hole size to prevent Post-Transplant problems
- Corneal polishing study aims to improve cell therapy for fuchs dystrophy