September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Characteristics of Epiretinal Membrane Remnant Edge by Optical Coherence Tomography after Pars PlanaVitrectomy
Author Affiliations & Notes
  • Raouf Gaber
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • Qisheng You
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • Mostafa Alam
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • Ilkay Kilic
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • Nadia Mendoza
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • Frank Tsai
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • William R Freeman
    Ophthalmology, University of California San Diego, San Diego, California, United States
  • Footnotes
    Commercial Relationships   Raouf Gaber, None; Qisheng You, None; Mostafa Alam, None; Ilkay Kilic, None; Nadia Mendoza, None; Frank Tsai, None; William Freeman, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 4055. doi:
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      Raouf Gaber, Qisheng You, Mostafa Alam, Ilkay Kilic, Nadia Mendoza, Frank Tsai, William R Freeman; Characteristics of Epiretinal Membrane Remnant Edge by Optical Coherence Tomography after Pars PlanaVitrectomy. Invest. Ophthalmol. Vis. Sci. 2016;57(12):4055.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To evaluate the incidence, predictors ,characteristics, and progression of epiretinal membrane (ERM) remnant edge seen by optical coherence tomography (OCT) after pars plana vitrectomy (PPV) with ERM removal.

Methods : A retrospective chart review was conducted for 85 consecutive patients with 86 eyes diagnosed with ERM who underwent PPV with epiretinal membrane peel between 2013 and 2014. Data collected and analyzed included age, gender, pre- and post-operative visual acuity, use of indocyanine green (ICG) stain for internal limiting membrane (ILM) peeling, type of tamponade used after vitrectomy, ERM edge boundaries, presence of cystoid macular edema, and central foveal thickness.

Results :
An ERM remnant edge was detected in 33/86 study eyes (38.4%) at the first post-operative OCT scan, Compared to those without an ERM remnant, patients with an ERM remnant after surgery were significantly older at baseline and had a higher incidence of ERM recurrence at their last visit. They were not significantly different in terms of gender, pre- and post-operative visual acuity, reduction of central foveal thickness from baseline, proportion of eyes with pre-operative ERM elevation on OCT, presence of macular edema before surgery, intra-operative ICG staining with ILM peel, or tamponade used.
Based on the edge morphology, we further classified the ERM remnant into three types: type 1 was flat and blended with the retina (14/33 eyes, 42.4%), type 2 was flat but stepped (17/33 eyes, 51.5%), type 3 was elevated (2/33 eyes, 6.0%). A significantly higher risk of ERM recurrence was seen in type 2 and type 3 ERM remnants (75% and 100% of eyes, respectively) than those with a type 1 ERM remnant (10% of type 1 eyes).

Conclusions : An ERM remnant edge was detected by OCT after PPV with ERM removal in 38.4% of eyes. The presence of a post-operative ERM edge was associated with a higher risk of ERM recurrence, particularly in the type 2 and type 3 edges, but not with post-operative visual acuity or central foveal thickness.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.

 

Classification of ERM edge remnant
Type 1 Flat and blended with the retina
Type 2 Flat and stepped
Type 3 Elevated edge

Classification of ERM edge remnant
Type 1 Flat and blended with the retina
Type 2 Flat and stepped
Type 3 Elevated edge

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