Epiretinal membrane : i am having a epiretinal membrane formation in my left eye for past 15 years. can it be treated, if so will i get back normal.

Depends: On how it is affecting your vision. Many people with mild or no vision loss need no treatment. Discuss this with your retinal specialist.

Macular pucker: Erm or macular pucker can be treated surgically if it is causing distortion or a significant decrease in your vision. The prognosis for getting back to normal depends on your personal case. It would likely improve, but not back to completely normal. See a retina specialist for a detailed evaluation.

Vitrectomy: If the symptoms are severe enough, a retinal surgeon can perform a vitrectomy operation which involves delicately peeling the wrinkled membrane from the surface of the retina. Over time, this allows the retina to flatten out and assume a more normal shape. Cataract if a common complication of this operation. Without surgery, the conditions either remains stable or worsens.

Depends: Macular puckers distort the retina like a wrinkle in clothing. If it has had time to set in, removing it may not allow pucker/wrinkle to completely unfurl. If you've had it with the same vision for 15 years, change after surgery unlikely to be great. If you've had for some time but it has been documented to worsen in recent months, there's a better chance to get back to pre-exacerbation vision.