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Not yet recruitingNCT06316388Updated Mar 18, 2024

Outcomes After Vitrectomy in Eyes With Tractional Diabetic Macular Edema

An observational study in Diabetic Macular Edema, sponsored by Rehab Azzam. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-03-18.

Sponsored by Rehab Azzam · Observational

From the registry’s dates

  • Primary completion was expected by Mar 2025, 1 year 6 months ago, but the record still lists the study as not yet recruiting.
Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
21
Ages
18 Years and older
Sex
All
01

Study summary

  1. assessment the outcomes of vitrectomy on retinal function by mf-ERG (multifocal electroretinogram) and anatomy by OCT (optical coherence tomography) in patients with tractional diabetic macular edema (TDME) .
  2. To correlate the postoperative corrected distance visual acuity (CDVA) with the mf-ERG and OCT findings following vitrectomy surgery for TDME.
Read the detailed description

Diabetic retinopathy (DR) is one of the leading causes of vision loss worldwide [1]. In 2010, DR affected more than 93 million individuals worldwide, 28 million of whom experienced vision-threatening DR[2].

Diabetic macular edema (DME) is a common cause of visual loss in diabetic retinopathy (DR) and is a complication in any stages of DR including proliferative diabetic retinopathy (PDR)[3].

The terms vitreous traction maculopathy, vitreous induced diabetic macular edema and maculopathy due to posterior hyaloid traction are synonymous and describe a pattern of diabetic maculopathy which is characterized by: (1) The absence of complete posterior vitreous detachment; (2) An increased retinal thickness in the center of the macula, and (3) a characteristic reflex of the vitreoretinal interface[4]. there are multiple factors in the vitreomacular interface including ERM, taut posterior cortices, vitreoschisis, PVD, and adhesions [5]. Anomalous PVD generates antero-posterior and tangential traction forces at the vitreo-retinal interface that act upon the inner and outer retinal layers [6]. Until recently, the only treatment option available for VMA was vitrectomy[7].

Few studies have used the multifocal electroretinogram (mfERG) technique to investigate the effects of vitrectomy on macular visual function for DME [8]. Mf-ERG is an objective electrophysiologic technique that measures the electrical changes in the central retinal area. This technique accurately assess the electrophysiologic activity in multiple retinal areas, and gives us a topographic charting of retinal function [9] .

02

Conditions studied

  • Diabetic Macular Edema
03

In context

Macular Edema

841 studies on the registry are indexed under Macular Edema; 56 are open to participants now.

This study's planned enrollment of 21 is below the median of 97 across 163 observational studies indexed under Macular Edema.

Browse Macular Edema studies →

Lead sponsor

This is the only study on the registry with Rehab Azzam as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

eyes with tractional diabetic macular edema

Inclusion criteria

  • Age ≥18 years; type 1 or 2 diabetes
  • TDME as the indication for vitrectomy; central foveal thickness (CFT) ≥300 µm as measured by spectral-domain optical coherence tomography (SD-OCT) , We defined VMIA on OCT as ERM, anomalous vitreomacular adhesions, or both , ), and possible visual acuity impairment attributed to foveal thickening due to DME.

Exclusion criteria

Exclusion Criteria:

  • A history of other retinal diseases; or active ocular inflammation or infection or glaucoma .
  • Eyes with macular edema from etiologies other than diabetes
  • Dense refractive media opacity before and after surgery, such as dense cataract, vitreous hemorrhage which can conceal fundus visualization and OCT measurements
  • Central retinal ischemia detected by intravenous fluorescein angiograms.
  • A history of vitrectomy
  • A visual acuity worse than 1\60 and the duration of tractional ERM is more than 12 months.
05

Study design

Observational model
Other
Time perspective
Prospective
Enrollment
21 participants (estimated)
Patient registry
No

Interventions

  • Procedurevitrectomy

    pars plana vitrectomy

06

What researchers measure

Primary outcomes

  1. assessment the outcomes of vitrectomy on retinal function in patients with tractional diabetic macular edema

    assessment the outcomes of vitrectomy on retinal function by mf-ERG (multifocal electroretinogram) in patients with tractional diabetic macular edema

    Time frame: baseline

  2. assessment the outcomes of vitrectomy on retinal anatomy in patients with tractional diabetic macular edema

    assessment the outcomes of vitrectomy on retinal anatomy by OCT (optical coherence tomography) in patients with tractional diabetic macular edema

    Time frame: Baseline

Secondary outcomes

  1. correlation CDVA with mf-ERG and OCT finding

    To correlate the postoperative corrected distance visual acuity (CDVA) with the mf-ERG and OCT findings following vitrectomy surgery for TDME.

    Time frame: baseline

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Lee R, Wong TY, Sabanayagam C. Epidemiology of diabetic retinopathy, diabetic macular edema and related vision loss. Eye Vis (Lond). 2015 Sep 30;2:17. doi: 10.1186/s40662-015-0026-2. eCollection 2015. PubMed 26605370 ↗
  • Yau JW, Rogers SL, Kawasaki R, Lamoureux EL, Kowalski JW, Bek T, Chen SJ, Dekker JM, Fletcher A, Grauslund J, Haffner S, Hamman RF, Ikram MK, Kayama T, Klein BE, Klein R, Krishnaiah S, Mayurasakorn K, O'Hare JP, Orchard TJ, Porta M, Rema M, Roy MS, Sharma T, Shaw J, Taylor H, Tielsch JM, Varma R, Wang JJ, Wang N, West S, Xu L, Yasuda M, Zhang X, Mitchell P, Wong TY; Meta-Analysis for Eye Disease (META-EYE) Study Group. Global prevalence and major risk factors of diabetic retinopathy. Diabetes Care. 2012 Mar;35(3):556-64. doi: 10.2337/dc11-1909. Epub 2012 Feb 1. PubMed 22301125 ↗
  • Romero-Aroca P, Baget-Bernaldiz M, Pareja-Rios A, Lopez-Galvez M, Navarro-Gil R, Verges R. Diabetic Macular Edema Pathophysiology: Vasogenic versus Inflammatory. J Diabetes Res. 2016;2016:2156273. doi: 10.1155/2016/2156273. Epub 2016 Sep 28. PubMed 27761468 ↗
  • Lewis H, Abrams GW, Blumenkranz MS, Campo RV. Vitrectomy for diabetic macular traction and edema associated with posterior hyaloidal traction. Ophthalmology. 1992 May;99(5):753-9. doi: 10.1016/s0161-6420(92)31901-3. PubMed 1594222 ↗
  • Agarwal D, Gelman R, Prospero Ponce C, Stevenson W, Christoforidis JB. The Vitreomacular Interface in Diabetic Retinopathy. J Ophthalmol. 2015;2015:392983. doi: 10.1155/2015/392983. Epub 2015 Sep 3. PubMed 26425349 ↗
  • Duker JS, Kaiser PK, Binder S, de Smet MD, Gaudric A, Reichel E, Sadda SR, Sebag J, Spaide RF, Stalmans P. The International Vitreomacular Traction Study Group classification of vitreomacular adhesion, traction, and macular hole. Ophthalmology. 2013 Dec;120(12):2611-2619. doi: 10.1016/j.ophtha.2013.07.042. Epub 2013 Sep 17. PubMed 24053995 ↗
  • Yamamoto T, Akabane N, Takeuchi S. Vitrectomy for diabetic macular edema: the role of posterior vitreous detachment and epimacular membrane. Am J Ophthalmol. 2001 Sep;132(3):369-77. doi: 10.1016/s0002-9394(01)01050-9. PubMed 11530050 ↗
  • Massin P, Audren F, Haouchine B, Erginay A, Bergmann JF, Benosman R, Caulin C, Gaudric A. Intravitreal triamcinolone acetonide for diabetic diffuse macular edema: preliminary results of a prospective controlled trial. Ophthalmology. 2004 Feb;111(2):218-24; discussion 224-5. doi: 10.1016/j.ophtha.2003.05.037. PubMed 15019365 ↗
  • Dowler JG. Laser management of diabetic retinopathy. J R Soc Med. 2003 Jun;96(6):277-9. doi: 10.1177/014107680309600605. No abstract available. PubMed 12782691 ↗
  • Khattab AAA, Ahmed MM, Hammed AH. Pars plana vitrectomy for tractional diabetic macular edema with or without internal limiting membrane peeling. Med Hypothesis Discov Innov Ophthalmol. 2022 Dec 3;11(3):110-118. doi: 10.51329/mehdiophthal1454. eCollection 2022 Fall. PubMed 37641643 ↗
  • Marmor MF, Hood DC, Keating D, Kondo M, Seeliger MW, Miyake Y; International Society for Clinical Electrophysiology of Vision. Guidelines for basic multifocal electroretinography (mfERG). Doc Ophthalmol. 2003 Mar;106(2):105-15. doi: 10.1023/a:1022591317907. No abstract available. Erratum In: Doc Ophthalmol. 2003 May;106(3):338. PubMed 12678274 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 18, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06316388
Lead sponsor
Rehab Azzam
Responsible party
Rehab Azzam (Principle investigator, Assiut University) — Sponsor-investigator
First posted
Mar 18, 2024
Start date
Mar 10, 2024 (estimated)
Primary completion
Mar 10, 2025 (estimated)
Completion
Mar 11, 2025 (estimated)
Last update
Mar 18, 2024

Study contacts

rehab azzam, master
Contact
rehabazzam14111994@gmail.com
01060391518
ehab wasfi, prof
study chair · Assiut University

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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