An observational study in Cataract and Glaucoma, sponsored by Visionair Oogzorg. Recruiting at 1 site in Belgium. Per ClinicalTrials.gov, last updated 2024-12-02.
Sponsored by Visionair Oogzorg · Observational
Among 13 studies in Cataract with a site in Belgium — 3 open to participants now, 3 under way, none of them phase 3. Cataract · Belgium.
Among the 13 studies in Cataract with a site in Belgium, this one is one of 2 that started in 2024, is one of 4 observational ones, and was the 12th registered.
1,629 studies on the registry are indexed under Cataract; 235 are open to participants now.
Browse Cataract studies →3 of the 13 studies in Cataract with a site in Belgium are open now. Recruiting first, the newest first:
Universitaire Ziekenhuizen KU Leuven · Sites in Belgium
Universitair Ziekenhuis Brussel · Sites in Belgium
A study can be open while its sites in Belgium have not opened yet or have stopped. Only those recruiting at a site in Belgium →
Of the 141 Cataract studies recruiting now, 88 (62%) set no upper age limit and 8 (6%) stop at 75 or younger; 10 take children under 18; 16 take healthy volunteers.
This study: all sexes · no healthy volunteers.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
13 studies; the count open now beside each. This study's row is marked.
First in 2013; this study’s year is marked. 2 started in 2024.
This study's planned enrollment of 10 is below the median of 89 across 475 observational studies indexed under Cataract.
Median enrollment 90 across the 9 interventional studies, 37 across the 4 observational. Of the 9 that completed or were terminated, 0 (0%) have results posted.
This tab as a report to print or save as PDF → With an account.
5 of 13 have an industry lead sponsor. The 10 most frequent:
This is the only study on the registry with Visionair Oogzorg as lead sponsor.
Visionair Oogzorg has 1 study filed under Cataract — fewer than ten, so there is no comparison to draw.
None of the studies under way reaches primary completion within a year.
Among the 13 studies in Cataract with a site in Belgium, from their registry updates:
Nothing recorded among them since 2026-09-25.
This tab as a report to print or save as PDF → With an account.
You were selected to participate in this observational study because you suffer from glaucoma and cataracts. For the cataract you will have cataract surgery. This study will not affect your treatment, it will only collect data on what is performed before, during and after the procedure.
The aim of this data collection is to demonstrate the safety of a new generation of cataract surgical devices in patients who also suffer from glaucoma. They are glaucoma patients who have an increased sensitivity to eye pressure increases both during and after surgery. The new surgical device makes it possible to safely perform cataract surgery under low pressures. This could, at least theoretically, provide an advantage for patients who also suffer from glaucoma.
Cataract surgery is a highly standardized procedure. However a new phacoemulsification system "Quatera 700" has been developed by Carl Zeiss Meditec. The system has a unique patented QUATTRO Pump that directly controls infusion and aspiration and enables a synchronous change in both. It has four membranes, which directly regulate infusion and aspiration and maintain a pre-set intraocular pressure (IOP), resulting in a stable anterior chamber during the surgery. The membranes are activated by pneumatic pressure regulated by sensors that measure infusion and aspiration flows which allows the system to determine and compensate for incisional leakage as well. This innovative pump system allows surgeons to significantly decrease the intra-ocular pressure during cataract surgery. In respect to competitive devices on the market, the Quatera system is able to operate with pressure four times lower than average. Especially in glaucoma patients (patients suffering from optic nerve head damage due to elevated intraocular pressures), performing surgery with lower intra-ocular pressures would help in avoiding extra nerve fiber layer damage and overall safety of the surgery.
Patients from Dr. Koen Willekens at Visionair Oogzorg.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cataract surgery
Complication rate during cataract surgery
Complication rate during cataract surgery
Time frame: Month 1
Best corrected visual acuity
Best corrected visual acuity will be determined and recorded at the preoperative, day 1, week 1 and month 1 visit.
Time frame: Month 1
Intraocular pressure
The intraocular pressure will be measured at the preoperative, day 1, week 1 and month 1 visit. Ocular hypertension will reported.
Time frame: 1 month
Retinal nerve fiber layer thickness
Optical Coherence Tomography will be performed at the preoperative and month 1 visit. Any abnormalities will be described.
Time frame: 1 year
Visual field mean deviation
The visual field examination will be performed at the preoperative and month 1 visit. Any abnormalities will be described.
Time frame: Month 1
Plan to share: Undecided
No publications or documents are linked to this record.
Started Nov 2024 (actual). Primary completion is estimated for Dec 2025, 13 months after the start.
Of 167 non-industry observational studies under Cataract, half reached primary completion within 19 months of starting (the median), counting those still running; a quarter within 9 and three quarters within 30. This study's planned 13 months is below that.
Counting every sponsor, half of 234 studies reached it within 16 months; a quarter within 9 and three quarters within 30.
How these figures are worked out, and which studies are left out of them.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
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