Does anyone know anything about macular pucker causes?

Several Causes. Macular pucker or epiretinal membrane results in formation of a thin layer of scar tissue which distorts the retina. It is caused by cells migrating through a tiny hole or from inflammation. If the symptoms of blurring and distortion are severe enough, then surgery may be needed.
Epiretinal membrane. As a result of such things as inflammation inside the eye a thin layer of fibrous tissue can form on the surface of the retina in the back of the eye. When that membrane pulls a little bit to "wrinkle" the surface of the retina, it is known as macular pucker.