Author: Luis Arias, MD, PhD

Epiretinal membranes (ERMs) are common either as a primary condition or secondary to other diseases. We studied with SS-OCT the incidence of ERMs following rhegmatogenous retinal detachment repair with vitrectomy.

Based on the characteristics identified on SS-OCT findings, we identified three different types of ERM:

  • Type 1. Highly epimacular reflective band without other relevant alterations.
  • Type 2. Highly epimacular reflective band with thickening of the inner retinal layers.  Commonly, type 2 ERMs may also present inner retinal surface wrinkling and superficial retinal plexus deformation on OCT-angiography and en face images.
  • Type 3. Highly epimacular reflective band with inner retinal layer thickening and superficial retinal plexus deformation on OCT-angiography and en face images. Other alterations commonly observed in type 3 ERMs include the presence of outer retinal nuclear layer thickening and intraretinal cysts.

Superficial plexus deformation shown on OCT-angiography were produced by the traction exerted by the ERM on the retinal vessels and complemented the information given by the structural SS-OCT.