A macular pucker, sometimes called an epiretinal membrane, is a condition in which scar tissue grows on the surface of the retina directly over the macula. The macula is the part of the retina responsible for central and detailed vision. This scar tissue can contract, causing the retina to wrinkle. Vision loss, blurred vision, double vision, and distorted vision are all symptoms of a macular pucker.
If vision is severely affected by a macular pucker, surgery can be performed to remove the scar tissue from the surface of the retina. This surgery is called a vitrectomy and membrane peeling. During the surgery, the scar tissue is picked up or scraped off the surface of the retina with delicate instruments. Following surgery, vision can improve slowly. In most cases, distorted vision is decreased after surgery.