Effect of Type of Head Positioning on Retinal Displacement in Vitrectomy for Retinal Detachment (NCT04035343) | Clinical Trial Compass
UnknownNot Applicable
Effect of Type of Head Positioning on Retinal Displacement in Vitrectomy for Retinal Detachment
Canada324 participantsStarted 2019-08-26
Plain-language summary
Patients may experience metamorphopsia, or image distortion, after having vitrectomy to repair their rhegmatogenous retinal detachments especially those with a detached macula. Retinal displacement, as measured on autofluorescence photography, likely contributes to this distortion. It is thought that the retina slips inferiorly due to the residual subretinal fluid shifting as the patient transitions from the supine position intraoperatively to the sitting up position in the immediate postoperative period. By having the patient immediate position facedown or according to the retinal break, the risk of slippage is theoretically decreased.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Age ≥ 18
* Diagnosis of primary rhegmatogenous retinal detachment needing pars plana vitrectomy with the detachment involving at least one of the temporal vascular arcades, which would allow retinal displacement to be detected on fundus autofluorescence photography
Exclusion Criteria:
* Rhegmatogenous retinal detachment with an attached macula
* Proliferative retinopathy grade C or worst
* Prior vitrectomy for retinal detachment. Patients having had pneumatic retinopexy that failed to completely reattach the retina and therefore now needing vitrectomy are allowed into the study
* History of preoperative binocular diplopia
* Tamponade with silicone oil instead of gas
* Inability to maintain post operation head positioning
* Mental incapacity
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.