Wrinkling of the Macula (Macular Pucker or Epiretinal Membrane) may also cause distorted or blurred central vision. Surgery called pars planavitrectomy may be recommended to peel the membrane from the surface of the macula if vision is significantly impaired. Sometimes, these membranes can pull on the macula causing a Macular Hole. A vitrectomy is also necessary to repair these holes and to aid in healing; a gas bubble may be injected into the vitreous. This will require facedown positioning following surgery for up to 2 weeks. While the surgery is typically quite successful, each person’s visual outcome is different and will depend on many different factors. It is important for patients to discuss their expectations with their surgeon.