An epiretinal membrane, also known as a macular pucker, is a thin layer of scar tissue that forms over the macula, the area of the retina that gives us clear central vision. When the scar tissue contracts, the retina wrinkles, or puckers, causing blurry or distorted central vision. Patients with an epiretinal membrane may experience difficulty seeing fine details and reading small print, and may also see straight lines appearing as wavy. There may also be a gray area or blind spot in the center of your vision. Most cases of epiretinal membranes do not progress and do not require treatment. Noninvasive treatments such as eye drops or medications will not improve vision that is distorted from an epiretinal membrane. If vision distortion is severe enough, a vitrectomy may be performed to repair this condition.