- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02897583
YAG Vitreolysis for Floaters
September 12, 2016 updated by: Ophthalmic Consultants of Boston
A Prospective Randomized Controlled Trial Evaluating the Safety and Efficacy of YAG Vitreolysis Versus Sham for Symptomatic Weiss Ring Due to Posterior Vitreous Detachment
This is a single-center, prospective randomized controlled trial evaluating the safety and efficacy of YAG vitreolysis versus sham for symptomatic Weiss ring due to posterior vitreous detachment.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
52 subjects will be enrolled in the trial and randomized in a 2:1 ratio to receive either YAG laser vitreolysis or sham laser for symptomatic Weiss ring due to posterior vitreous detachment.
Subjects will follow up at one week, one month, three months, and six months after the procedure.
Assessments will include a questionnaire regarding duration of floater symptoms prior to presentation, severity of floater symptoms, number of floaters, and activity most inconvenienced by presence of floaters; Medical, ocular history and demographics collected; ETDRS and Snellen visual acuity; Optos color photography; Heidelberg Spectralis Optical Coherence Tomography (OCT) and infrared photo; B scan ultrasound of Weiss ring with caliper measurement of nearest distance between Weiss ring and retina, Weiss ring and posterior lens capsule (only in phakic eyes); Slit lamp and indirect ophthalmoscopy with scleral depression of study eye; Applanation tonometry; Visual Functioning Questionnaire-25 (VFQ 25).
Qualitative change in Optos photography will evaluated by a masked physician.
Study Type
Interventional
Enrollment (Actual)
52
Phase
- Not Applicable
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Symptoms of floaters that correlate to the presence of a posterior vitreous detachment for at least 6 months
- Documented posterior vitreous detachment on clinical examination, OCT, and B scan
- Self-rating of visual disturbance by the floaters must be at least 4 on a 0-10 scale, with 0 being no symptoms to 10 being debilitating symptoms.
- Symptomatic Weiss ring (PVD) must be at least 3 mm away from the retina and 5 mm from the posterior lens capsule of the crystalline lens, as measured on B-scan. For pseudophakic patients, there is no minimum required distance from the intraocular lens.
- Able to position for the YAG laser procedure.
- Accept the risks of YAG laser including but not limited to retinal detachment, intraocular hemorrhage, retinal damage, cataract formation, optic nerve damage, inflammation, and irreversible loss of vision.
- Willing and able to comply with clinic visits and study-related procedures
- If the patient has two symptomatic eyes, only one eye can be randomized and included in the study.
- Provide signed informed consent
Exclusion Criteria:
- Snellen best corrected visual acuity worse than 20/50 in the fellow eye
- History of retinal tear, retinal detachment, or uveitis in the study eye
- History of diabetic retinopathy, macular edema, retinal vein occlusion, or aphakia in the study eye
- History of glaucoma or high intraocular pressure defined as having a history of glaucoma surgery or currently taking two or more topical glaucoma medications in the study eye
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: YAG vitreolysis
A Karickoff lens with goniosol will be used to perform the YAG vitreolysis.
The number of shots will be determined at the discretion of the treating physician.
A focus offset may be used at investigator discretion.
Single shot mode will be used.
The maximum energy per pulse will be 7 mJ.
The endpoint of treatment is the vaporization of the Weiss ring into gas, as well as the disruption of it into smaller fragments as well as any other vitreous opacities deemed visually significant by the treating physician.
Only one treatment session will be performed.
|
|
Sham Comparator: Sham YAG vitreolysis
Sham laser treatment will be applied under the same procedure used for laser treatment but by turning the laser power down to 0.3 mJ and using a separate lens covered by a filter that absorbs the power, so no laser enters the eye.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Subjective improvement in floater symptoms
Time Frame: 6 Months
|
Questionnaire which asks: "Please rate your visual disturbance by the floaters on a 0-10 scale, with 0 being no symptoms to 10 being debilitating symptoms," "Please quantify your post-operative improvement as a percentage," and "How would you describe your floaters today compared to right before the laser procedure?"
|
6 Months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Best Corrected Visual Acuity
Time Frame: 6 Months
|
Mean change in visual acuity from Baseline as measured by ETDRS vision testing at 6 months
|
6 Months
|
VFQ-25 Near Activities
Time Frame: 6 Months
|
Mean change in baseline in the National Eye Institute Visual Functioning Questionnaire-25 (NEI VFQ-25) near activities subscale
|
6 Months
|
VFQ-25 Distance Activities
Time Frame: 6 Months
|
Mean change in baseline in the National Eye Institute Visual Functioning Questionnaire-25 (NEI VFQ-25) distance activities subscale
|
6 Months
|
Qualitative changes on infrared and color photography
Time Frame: 6 Months
|
Qualitative changes on infrared and color photography
|
6 Months
|
Incidence and severity of ocular and systemic adverse events
Time Frame: 6 Months
|
Incidence and severity of ocular and systemic adverse events
|
6 Months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Chirag P Shah, MD, MPH, Attending Physician
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
February 1, 2015
Primary Completion (Actual)
August 1, 2016
Study Completion (Actual)
August 1, 2016
Study Registration Dates
First Submitted
June 16, 2016
First Submitted That Met QC Criteria
September 12, 2016
First Posted (Estimate)
September 13, 2016
Study Record Updates
Last Update Posted (Estimate)
September 13, 2016
Last Update Submitted That Met QC Criteria
September 12, 2016
Last Verified
September 1, 2016
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- YAG-001
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Posterior Vitreous Detachment
-
Weill Medical College of Cornell UniversityRiverside Research InstituteCompletedPosterior Vitreous DetachmentUnited States
-
Khon Kaen UniversityRecruitingPosterior Vitreous DetachmentThailand
-
University of British ColumbiaCompleted
-
Khon Kaen UniversityNot yet recruitingPosterior Vitreous DetachmentThailand
-
Universitaire Ziekenhuizen KU LeuvenUnknownGlaucoma | Posterior Vitreous Detachment | Vitreomacular Traction | Vitreopapillary TractionBelgium
-
The New York Eye & Ear InfirmaryCompletedPosterior Vitreous Detachment | Epiretinal Membrane | Macular Hole | RPE DetachmentUnited States
-
Barnes Retina InstituteGenentech, Inc.CompletedRetinal Vein Occlusion | Posterior Vitreous DetachmentUnited States
-
University Hospital, MontpellierRecruitingGlaucoma | Posterior Vitreous DetachmentFrance
-
Columbia UniversityNational Eye Institute (NEI); Riverside Research InstituteCompletedDiabetic Retinopathy | Posterior Vitreous DetachmentUnited States
-
Indonesia UniversityCompletedVitreous DetachmentIndonesia
Clinical Trials on YAG vitreolysis
-
Dongyang People's HospitalRecruiting
-
Jaeb Center for Health ResearchNational Eye Institute (NEI); National Institutes of Health (NIH)CompletedVitreomacular TractionUnited States
-
Instituto PalaciosCompleted
-
Second Affiliated Hospital, School of Medicine,...Recruiting
-
Cairo UniversityCompleted
-
Menoufia UniversityCompleted
-
University of California, IrvineBeckman Laser Institute University of California IrvineCompleted
-
University of ParmaCompletedPigment Dispersion Syndrome: Natural History and Possible Protective Effect of a YAG Laser IridotomyPigment Dispersion SyndromeItaly
-
Alexandria UniversityRecruitingChanges in Bacterial Count in Axilla After Laser Hair RemovalEgypt
-
Cynosure, Inc.Completed