How progressive is unilaterlal macular pucker? corrected vision in that eye is 20/40.opposite eye no pucker,corrected vision 20/30.age 69.

Epiretinal membrane: Macular pucker or Epiretinal membrane is caused in many conditions eg. Trauma, Vitreius or Retinal detachment, Diabetes or Retinal vascular episodes Condition can progress to Macular hole and cause visual distortion. Surgical treatment is Vitrectomy and excision if any tension strands. Surgery us not recommended till vision is 20/200! Or worse. You have relatively good vision and no distortion

Slowly progressive: Macular pucker may progress very slowly if at all or may progress more rapidly. Individual progression is unpredictable. Macular pucker is a very common condition as we age especially seen after posterior vitreous detachment when there may be a stimulus to fibroblast proliferation on the surface of the retina. The vast majority of patients never require surgical intervention.

Not predictable: Puckers are fairly common. Unless they affect vision in a way that either bothers the patient, or is moderate to severe, they are usually observed. I typically follow macular puckers every 6-12 months, and often they do end up progressing over time. Best to visit with a trustworthy retina specialist for an opinion.