Macular Pucker: A Macular Pucker occurs when an Epiretinal Membrane or Posterior Vitreous adheres to the macula and contracts, which causes distortion or puckering of the macula. Vitreomacular Traction: Vitreomacular Traction refers to an incomplete separation of the vitreous from the retina where the posterior or back edge of the vitreous remains attached to the central macula.