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DRCR Protocol AG - Vitreomacular Traction

Effects Pneumatic Vitreolysis on Vitremacular Traction

Study Description:

Condition or DiseaseIntervention / Treatment PhaseSponsor Status 
 Vitreomacular Traction Intraocular Gas C3F8 Jaeb Center for
Health Research




Eyes with idiopathic symptomatic Vitreomacular Traction (VMT) without a macular hole will be randomly assigned to 0.3mL intraocular gas (C3F8) injection or sham injection to determine if pneumatic vitreolysis (PVL) is effective in releasing VMT.

Detailed Description:

The objective of this trial is to obtain estimates of the proportion of eyes with foveal VMT release on OCT after PVL with gas injection versus observation (sham injection) in eyes with VMT without an associated Mac Hole.

Eyes with idiopathic symptomatic VMT will be randomly assigned to:

  • Pneumatic Vitreolysis with 0.3 mL intraocular injection of C3F8 gas.0.3mL.
  • Sham injection.

Perfluoropropane (C3F8) is an inert gas under pressure and is administered by injection into the vitreous cavity. It was approved by the FDA in February 1993 for the use of placing pressure on detached retina.

Study Eye Criteria: The participant must have at least one eye meeting all of the inclusion criteria and none of the exclusion criteria listed below. A participant can have only one study eye. If both eyes are eligible at the time of enrollment, the study eye will be selected by the investigator and participant before injection.

Inclusion - Study Eye:

  • Vitreomacular adhesion on OCT that is no larger than 3000 microns with visible separation of the vitreous on either side as seen on horizontal and vertical scans, confirmed by central reading center Note: presence of epiretinal membrane is neither a requirement nor exclusion.
  • Decreased visual function (e.g. metamorphopsia or other visual symptom) that is attributed to VMT. Examples of visual symptoms include:
    • Distortion and/or reduction in visual acuity.
    • Recognized difficulty with reading, driving, or using a computer.
    • Patient recognized interference with quality of life because of a and/or b.
  • Visual acuity letter score of at least 19 (approximate Snellen equivalent 20/400 or better) and at most 78 (20/32 or worse).
  • Investigator and participant willing to wait 6 months before surgical intervention, provided visual acuity remains stable.
    An eye that requires prompt treatment for VMT should not be enrolled.

Exclusion - Study Eye:

  • Other ocular condition that might affect visual acuity during the course of the study or require intraocular treatment (e.g., retinal vein occlusion, substantial age-related macular degeneration, or macular edema induced by a condition other than VMT).
    • If diabetic retinopathy is present, severity level must be microaneurysms only or better (≤ diabetic retinopathy severity level 20).
  • Presence of drusen is acceptable; however, eyes with geographic atrophy or neovascular age-related macular degeneration involving the macula are excluded.'
  • High level of myopia (spherical equivalent of -8.00 diopters or more myopic if phakic or retinal abnormalities consistent with pathologic myopia if phakic or pseudophakic).
  • History of prior gas injection, ocriplasmin injection, or intraocular injection for any reason.
  • History of prior vitrectomy.
  • History of uncontrolled glaucoma.  IOP must be <30 mmHg, with no more than one topical glaucoma medication, and no documented glaucomatous field loss for the eye to be eligible.
  • History of major ocular surgery (including cataract extraction, scleral buckle, any intraocular surgery, etc.) within prior 4 months or major ocular surgery anticipated within the next 6 months following randomization.
  • History of YAG capsulotomy performed within 4 months prior to randomization l. Aphakia or anterior chamber intraocular lens.
  • Exam evidence of severe external ocular infection, including conjunctivitis, chalazion, or substantial blepharitis.
  • Uveitis.
  • Presence of any macular hole or lamellar hole (according to reading center grading).
  • Retinal history or pathology that might predispose an eye to an increased risk of retinal detachment from the procedure.
  • Untreated retinal tears, not retinal holes, are an exclusion. It is up to the investigator to determine whether extent of lattice degeneration or other pathology might increase the risk of retinal detachment.
  • Any contraindication to paracentesis (e.g., history of narrow angle glaucoma).
  • Lenticular or zonular instability 

Inclusion Criteria - General:
To be eligible, the following inclusion criteria must be met:

  • Age ≥ 18 years.
  • Able and willing to provide informed consent.
  • Able and willing to avoid high altitude travel, including airline travel, until gas resolution (approximately 6 to 8 weeks).
  • For phakic patients, able and willing to avoid supine position until gas resolution (approximately 6 to 8 weeks).
  • Able and willing to wear wristband that informs any medical personnel that the patient has a gas bubble in the eye.
Exclusion Criteria - General:
A potential participant is not eligible if any of the following exclusion criteria are present:
  • A condition that, in the opinion of the investigator, would preclude participation in the study (e.g., unstable medical status that might preclude completion of follow up).
  • Participation in an investigational trial within 30 days of enrollment that involves treatment with any drug or device that has not received regulatory approval for the indication being studied at the time of study entry.
  • Known contraindication to any component of the treatment.
  • Known allergy to any drug used in the procedure prep (including povidone iodine).
  • Potential participant is expecting to move out of the area of the clinical center to an area not covered by another clinical center during the 6 months following enrollment.
  • Anticipated surgery requiring anesthesia within the 6 months following enrollment.
  • Participants cannot receive nitrous oxide until gas resolution.
  • For women of child-bearing potential: pregnant at the time of enrollment. 

Beachwood Office - Janine Davis  216-831-5700    •    jdavis@retina-assoc.com
Middleburg Heights Office - Susan Rath  440-663-0022   •    srath@retina-assoc.com

To learn morehttps://clinicaltrials.gov/ct2/show/NCT03647267?term=protocol+ag&rank=1