Dropless Pars Plana Vitrectomy Study
- Conditions
- Rhegmatogenous Retinal Detachment
- Interventions
- Registration Number
- NCT05331664
- Lead Sponsor
- Massachusetts Eye and Ear Infirmary
- Brief Summary
To demonstrate that intraoperative use of subtenon triamcinolone acetonide at the time of surgery without postoperative eye drops is non-inferior to the regimen of postoperative eye drops following primary pars plana vitrectomy for retinal detachment.
- Detailed Description
This is a non-inferiority, single-center, randomized, controlled, open-label clinical trial. Investigators will recruit patients that present to their clinic or emergency department with newly diagnosed mac-on or mac-off rhegmatogenous retinal detachment. Patients will be randomized to one of the following groups:
* Group 1: A total of 84 study subjects (84 eyes) will receive topical antibiotic qid for one week after surgery, topical prednisolone 1% qid tapered by one drop weekly for four weeks (4/3/2/1 taper), and topical atropine 1% daily for one week.
* Group 2: A total of 84 study subjects (84 eyes) will receive sub-tenon injection of triamcinolone acetonide (40 mg/mL) at the time of surgery, with no post-operative eye drops.
Both groups will receive subconjunctival injection of antibiotic (cefazolin 50 mg/0.5 ml, moxifloxacin 0.5 mg/0.1 ml, or vancomycin 1 mg/0.1 ml) and subconjunctival injection of dexamethasone (4 mg/ml) at the time of surgery, as well as atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery.
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 168
- Primary rhegmatogenous retinal detachment (mac-on or mac-off) requiring pars plana vitrectomy (23, 25 and 27-gauge)
- Need for concomitant lensectomy or cataract surgery
- Pars plana vitrectomy taking place more than seven days after the initial diagnosis
- History of any prior vitreoretinal surgery (excluding laser surgery) in surgical eye
- History of previous retinal detachment in surgical eye
- History of ocular incisional surgery within six months of surgery (excluding laser surgery) in surgical eye
- History of ocular laser surgery within 1 month in surgical eye
- History of intravitreal injection within 1 month in surgical eye
- Diagnosis of glaucoma or intraocular pressure more than 21 mmHg in either eye
- Active or chronic or recurrent uncontrolled ocular or systemic disease
- Active or history of chronic or recurrent inflammatory eye disease
- Previous history of steroid response
- Current treatment with oral, topical, or intravitreal corticosteroids
- Presence of proliferative vitreoretinopathy at the time of diagnosis
- Presence of giant retinal tear at the time of diagnosis
- Diagnosis of proliferative diabetic retinopathy
- Anterior chamber inflammation on presentation in either eye
- Signs of ocular infection at presentation in either eye
- Acute external ocular infections
- Known or suspected sensitivity or allergy to any of the medications used in the operation or postoperatively
- Inability to use or apply topical eye drops
- Requirement for silicone oil as a tamponade agent
- Individuals with impaired decision-making capacity
- Non-English-speaking subjects
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Group 1 Atropine 1% * Subconjunctival antibiotic (cefazolin 50 mg/0.5 mL, moxifloxacin 0.5 mg/0.1 mL, or vancomycin 1 mg/0.1 mL) and subconjunctival dexamethasone (4 mg/mL) at the time of surgery * Topical atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery * Topical moxifloxacin 0.5% or Polymyxin/Trimethoprim if patient is allergic to moxifloxacin; 4 times per day for 1 week after surgery. * Topical prednisolone 1% 1 drop 4 times per day tapered by one drop weekly for 4 weeks (4/3/2/1 taper) * Topical atropine 1% daily for 1 week Group 1 Pars plana vitrectomy * Subconjunctival antibiotic (cefazolin 50 mg/0.5 mL, moxifloxacin 0.5 mg/0.1 mL, or vancomycin 1 mg/0.1 mL) and subconjunctival dexamethasone (4 mg/mL) at the time of surgery * Topical atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery * Topical moxifloxacin 0.5% or Polymyxin/Trimethoprim if patient is allergic to moxifloxacin; 4 times per day for 1 week after surgery. * Topical prednisolone 1% 1 drop 4 times per day tapered by one drop weekly for 4 weeks (4/3/2/1 taper) * Topical atropine 1% daily for 1 week Group 1 Prednisolone 1% * Subconjunctival antibiotic (cefazolin 50 mg/0.5 mL, moxifloxacin 0.5 mg/0.1 mL, or vancomycin 1 mg/0.1 mL) and subconjunctival dexamethasone (4 mg/mL) at the time of surgery * Topical atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery * Topical moxifloxacin 0.5% or Polymyxin/Trimethoprim if patient is allergic to moxifloxacin; 4 times per day for 1 week after surgery. * Topical prednisolone 1% 1 drop 4 times per day tapered by one drop weekly for 4 weeks (4/3/2/1 taper) * Topical atropine 1% daily for 1 week Group 2 Pars plana vitrectomy * Subtenon triamcinolone acetonide (40 mg/1mLl) at the time of surgery * Subconjunctival antibiotic (cefazolin 50 mg/0.5 mL, moxifloxacin 0.5 mg/0.1 mL, or vancomycin 1 mg/0.1 mL) and subconjunctival dexamethasone (4 mg/mL) at the time of surgery * Topical atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery * No postoperative eye drops Group 2 Triamcinolone Acetonide 40mg/mL * Subtenon triamcinolone acetonide (40 mg/1mLl) at the time of surgery * Subconjunctival antibiotic (cefazolin 50 mg/0.5 mL, moxifloxacin 0.5 mg/0.1 mL, or vancomycin 1 mg/0.1 mL) and subconjunctival dexamethasone (4 mg/mL) at the time of surgery * Topical atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery * No postoperative eye drops Group 1 Moxifloxacin 0.5% or Polymyxin/Trimethoprim if patient is allergic to moxifloxacin * Subconjunctival antibiotic (cefazolin 50 mg/0.5 mL, moxifloxacin 0.5 mg/0.1 mL, or vancomycin 1 mg/0.1 mL) and subconjunctival dexamethasone (4 mg/mL) at the time of surgery * Topical atropine 1% and antibiotic-steroid ointment (neomycin-polymyxin B-dexamethasone) at the time of surgery * Topical moxifloxacin 0.5% or Polymyxin/Trimethoprim if patient is allergic to moxifloxacin; 4 times per day for 1 week after surgery. * Topical prednisolone 1% 1 drop 4 times per day tapered by one drop weekly for 4 weeks (4/3/2/1 taper) * Topical atropine 1% daily for 1 week
- Primary Outcome Measures
Name Time Method Mean anterior chamber cell Day 7 after surgical procedure Mean anterior chamber cell based on SUN (Standardization of Uveitis Nomenclature) criteria as measured by Slit Lamp Biomicroscopy
- Secondary Outcome Measures
Name Time Method Mean anterior chamber cell Day 1, 30 and 90 after surgical procedure Mean anterior chamber cell based on Standardization of Uveitis Nomenclature (SUN) criteria as measured by Slit Lamp Biomicroscopy
Need for rescue medication (corticosteroid) Day 1, 7, 30 and 90 after surgical procedure Need for additional medication (corticosteroid) to control post-operative inflammation
Intraocular pressure less than 5 or more 30 mmHg Day 1, 7, 30 and 90 after surgical procedure Intraocular pressure measured by applanation tonometer or tono-pen
Need for medications to reduce intraocular pressure Day 1, 7, 30 and 90 after surgical procedure Need for additional medication to reduce intraocular pressure
Visual acuity Day 1, 7, 30 and 90 after surgical procedure Best-corrected visual acuity measured using Snellen chart
Degree of pain Day 1, 7, 30 and 90 after surgical procedure Degree of pain on a pain scale of 1-10 (0: pain free, 10: unspeakable pain)
Self-reported adherence to positioning Day 1 and 7 after surgical procedure Assessment of self-reported adherence to positioning: "Over the past day or week, what percentage of time or number of hours per day do you think you adhered with the recommended positioning?"
Self-reported adherence to eye drops Day 1, 7 and 30 after surgical procedure Assessment of self-reported adherence to eye drops in the control group: "Over the past week or month, what percentage of your drops do you think you took correctly?"
Progression of cataract Day 30 and 90 after surgical procedure Evaluation of progression of cataract by Slit Lamp Biomicroscopy
Adverse events Day 1, 7, 30 and 90 after surgical procedure Adverse Events including: Endophthalmitis, Re-detachment requiring surgery, Intraocular pressure requiring medication, Need for additional procedures, Any other adverse events
Trial Locations
- Locations (1)
Massachusetts Eye and Ear
🇺🇸Boston, Massachusetts, United States