Figure 1. OCT of the macula showing an epiretinal membrane on the retinal surface. Image: Bektelund, Wikimedia Commons, CC BY-SA 4.0. Source
What is it?
An epiretinal membrane, also called a macular pucker, is a thin layer of scar-like tissue that grows on the surface of the macula, the center of the retina that gives you sharp vision. As it tightens, it can wrinkle the retina, making straight lines look wavy and vision blurry. It is common with age, found in about 1 in 10 older adults, and it is not caused by anything you did.
What do I do about it?
Most membranes stay stable for years and don’t need treatment. I’ll check it with a scan (OCT) at your visits, and you can check each eye on its own at home with a grid or straight line. If the distortion or blur starts to bother you in daily life, a vitrectomy can peel the membrane off. Vision usually improves slowly over months after surgery, and a cataract often develops afterward.
When should I call?
Call my office the same day at 408-540-3559 if you notice:
- Straight lines becoming more wavy
- Vision getting blurrier
- A new dark or missing spot in the center
- New floaters, flashes or a curtain (especially after surgery)
This page is for general education and does not replace an exam. Call Cai Retina at 408-540-3559 with questions.