Permanent punctal occlusion is a treatment for really dry eyes. It’s kind of like the long-term version of punctal plugs. Remember how plugs block the little drains (called puncta) in your eyelids to keep your tears from draining away too fast? Well, sometimes doctors do a small procedure to close those drains for good if your dry eyes are really bad and regular plugs aren’t enough.

Instead of using a tiny plug, the doctor seals the drain shut using heat or a laser. It’s usually quick and doesn’t hurt much. After that, your tears stay on your eyes longer, so they feel more moist and comfortable.