Microinvasive Pars Plana Vitrectomy Combined ILM Peeling Versus Anti-VEGF Intravitreal Injection for Treatment-naïve Diabetic Macular Edema

Last updated: March 5, 2024
Sponsor: Tianjin Medical University Eye Hospital
Overall Status: Active - Recruiting

Phase

N/A

Condition

Diabetic Macular Edema

Macular Edema

Diabetic Retinopathy

Treatment

Conbercept intravitreal injection

Vitrectomy combined with ILM peeling

Clinical Study ID

NCT05728476
TianjinMUEHhbj111
  • Ages > 18
  • All Genders

Study Summary

Diabetic macular edema (DME) is the main cause of vision loss in patients with diabetes. At present, anti-vascular endothelial growth factor (VEGF) intravitreal injection is the first-line therapy for DME, nevertheless, some patients do not respond well to anti-VEGF agents and often require multiple injections, which increases the psychological and economic burden of patients. Microinvasive pars plana vitrectomy (PPV) has been proven to be safe and effective for refractory DME. However, there are few studies on treatment-naïve DME. The purpose of this study is to explore whether early PPV combined with internal limiting membrane (ILM) peeling can reduce the treatment burden of DME patients, prevent vision loss, and maintain long-term stabilization of diabetic retinopathy.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • ≥18 years of age
  • Patients and their families fully understand the research and sign the informedconsent form
  • Diagnosed with type 1 or 2 diabetes mellitus
  • Hemoglobin A1c (HbA1c) of less than 10% within 3 months
  • Clear media for adequate OCT and optical coherence tomography angiography (OCTA)images
  • Treatment-naïve DME diagnosed clinically
  • Central subfield thickness (CST) of >300μm and intra- or subretinal fluid seen on (spectral-domain) SD-OCT
  • Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA between 24 and 73 letters onthe day of randomization
  • Treatment within 12 months of DME diagnosis
  • No contraindication of vitrectomy or conbercept intravitreal injection

Exclusion

Exclusion Criteria:

  • Any previous DME treatment (i.e. anti-VEGF injections, intraocular corticosteroids,macular photocoagulation)
  • Macular edema caused by other disease (i.e. neovascular age-related maculardegeneration, retinal vein occlusion, uveitis)
  • Any previous intraocular surgeries (cataract surgery performed at least 3 monthsbefore study entry will not be exclusionary)
  • Vision loss caused by other ocular disease (i.e. cataract, proliferative diabeticretinopathy, glaucoma, high myopia)
  • A follow-up duration of less than 12 months
  • Severe dysfunction of the heart, liver, kidney, lung and other organs

Study Design

Total Participants: 102
Treatment Group(s): 2
Primary Treatment: Conbercept intravitreal injection
Phase:
Study Start date:
March 05, 2024
Estimated Completion Date:
September 05, 2026

Connect with a study center

  • Tianjin medical university eye hosipital

    Tianjin, Tianjin
    China

    Active - Recruiting

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