An interventional study of Cataract surgery in Cataract Extraction, Phacoemulsification and Glistenings, sponsored by Guy's and St Thomas' NHS Foundation Trust. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 100 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-08-06.
Sponsored by Guy's and St Thomas' NHS Foundation Trust · Not applicable, Interventional, and Treatment
Among 23 studies in Patient Satisfaction with a site in United Kingdom — 5 open to participants now, 5 under way, none of them phase 3. Patient Satisfaction · United Kingdom.
Among the 23 studies in Patient Satisfaction with a site in United Kingdom, this one is one of 5 that started in 2018, is one of 8 with no phase, and was the 4th registered.
877 studies on the registry are indexed under Patient Satisfaction; 202 are open to participants now.
Browse Patient Satisfaction studies →5 of the 23 studies in Patient Satisfaction with a site in United Kingdom are open now. Recruiting first, the newest first:
Cochlear · Sites in United Kingdom
Imperial College London · Sites in United Kingdom
Katherine Finlay · Sites in United Kingdom
Royal Cornwall Hospitals Trust · Sites in United Kingdom
Cardiff and Vale University Health Board · Sites in United Kingdom
A study can be open while its sites in United Kingdom have not opened yet or have stopped. Only those recruiting at a site in United Kingdom →
Of the 99 Patient Satisfaction studies recruiting now, 61 (62%) set no upper age limit and 30 (30%) stop at 75 or younger; 14 take children under 18; 26 take healthy volunteers.
This study: 18 Years to 100 Years · all sexes · healthy volunteers too.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
23 studies; the count open now beside each. This study's row is marked.
First in 2005; this study’s year is marked. 5 started in 2018.
This study's enrollment of 145 is above the median of 96 across 624 interventional studies indexed under Patient Satisfaction.
Median enrollment 113 across the 8 interventional studies, 200 across the 15 observational. Of the 13 that completed or were terminated, 1 (8%) have results posted.
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1 of 23 have an industry lead sponsor. The 10 most frequent:
Guy's and St Thomas' NHS Foundation Trust is the lead sponsor of 295 studies on the registry; 80 are open to participants now.
Guy's and St Thomas' NHS Foundation Trust has 2 studies filed under Patient Satisfaction — fewer than ten, so there is no comparison to draw.
1 of the studies in Patient Satisfaction with a site in United Kingdom that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07698041Katherine FinlayRUTISS-Diary and RUTISS-65 Study | 2027-06-30 |
Among the 23 studies in Patient Satisfaction with a site in United Kingdom, from their registry updates:
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This is a bilateral randomised controlled study to compare visual performance, refractive outcome, forward light scatter, patient satisfaction and objective measurement of glistenings following insertion of two monofocal, aspheric, hydrophobic acrylic intraocular lenses (IOLs). A new product is compared with an established one.
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:
Exclusion criteria relate to clinical for Femtosecond Laser Assisted Cataract Surgery, such as:
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.
A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.
Stroke symptoms need emergency care at once, even if they go away.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
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.
TIA (transient ischaemic attack)
A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.
Stroke symptoms need emergency care at once, even if they go away.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
'Alcon Clareon' : New monofocal, hydrophobic acrylic intraocular lens implant
Device: Cataract surgery
Abbott Tecnis PCB00- Standard monofocal,hydrophobic acrylic intraocular lens implant
Device: Cataract surgery
Conventional small-incision phacoemulsification cataract surgery with insertion of intraocular lens implant
Visual acuity
As measured by conventional LogMAR visual acuity charts
Time frame: 13 months
Incidence of intraocular lens glistenings
Incidence of presence of intraocular lens glistenings in each study arm
Time frame: 13 months
Severity of intraocular lens glistenings
Number of vacuoles per square millimetre
Time frame: 13 months
Refraction (i.e. glasses prescription)
In conventional sphere/cylinder dioptre scales: total range -40 to +40, in 0.25 steps. Higher values represent worse outcome. Values closer to 0 (zero) represent better outcome
Time frame: 13 months
Forward light scatter
Intraocular (forward) light scatter is measured with a specifically devised computerised vision test. It is represented by straylight parameter, Log(s), on a logarithmic scale from 0 to 1.5. The lower the value (i.e. closer to 0), the better the outcome.
Time frame: 13 months
Contrast sensitivity
Visual acuity (LogMAR scale: total range -0.2 to 1.0 in 0.02 steps) measured at different contrasts with a computerized contrast sensitivity chart. Negative values, or values closer to 0, represent better outcome.
Time frame: 13 months
Patient satisfaction
Validated patient satisfaction questionnaire. We use specially designed and validated conversion tables to convert raw scores from questionnaires to Rasch calibrated measures.
Time frame: 13 months
Self-reported health
Validated self-reported health questionnaire. We use a vertical Visual Analogue Scale (VAS) to record patients' self-reported health on a scale from 0-100 (values closer or equal to 100 represent better outcome).
Time frame: 13 months
Ran from Feb 2018 to primary completion in Aug 2019, 17 months.
Of 368 non-industry interventional studies with no phase under Patient Satisfaction, half reached primary completion within 12 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 23. This study's 17 months is above that.
Counting every sponsor, half of 370 studies reached it within 12 months; a quarter within 6 and three quarters within 23.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Aug 2019. You cannot join it, but the record below documents what was studied.
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Guy's and St Thomas' NHS Foundation Trust →