What actually happens during DCR surgery, and what recovery involves

By the time someone reaches me asking about DCR surgery, they have usually already tried the patient route: drops, warm compresses, waiting to see if a watery eye settles on its own. It has not. The tear duct is genuinely blocked, not just irritated, and no amount of patience reopens a channel that has scarred shut. That is the point at which the conversation moves from managing symptoms to fixing the plumbing, and DCR is the operation that does it.

I find most people arrive at this appointment having read a lot online and understood very little of it, because the explanations are either too simplified to be useful or written for other surgeons. So let me walk through it properly, the way I would in clinic.

What does DCR surgery actually do?

DCR stands for dacryocystorhinostomy, and the name is really just the anatomy in order: the tear sac, the nose, and a new opening between them. Your natural tear drainage system runs from the corner of the eye, through the tear sac, down the nasolacrimal duct, and into the nose. When that duct is blocked, usually somewhere along its narrow bony course, tears have nowhere to go. They overflow down the cheek, and because they are not draining, they can also stagnate in the tear sac and become the sticky, sometimes infected discharge that often comes with a longstanding blockage.

DCR does not try to unblock the old duct. It builds a new one. The surgeon creates a direct opening between the tear sac and the nasal cavity, so tears bypass the blocked section entirely rather than being forced back through it. I sometimes describe it to patients as diverting a blocked pipe around the blockage instead of trying to force the blockage out. If you want the fuller picture of how tears can end up backing up in the first place, I have written separately about watery eyes and blocked tear ducts, since DCR is the answer to only one part of that picture.

Timing matters too, particularly after an infected tear sac. The conventional teaching is to let an acute infection settle first and wait several weeks before operating on quiet tissue. More recent evidence has shifted some surgeons towards operating endoscopically much sooner, even while the infection is still active, and it is a genuine, active debate rather than a settled question. I argued the case for early surgery myself at a debate in Taiwan, on the record as the "yes" side, and I still think the evidence increasingly supports it in the right hands. You can read more about that and my other academic work on the research page.

What is the difference between external and endoscopic DCR?

Both versions reach the same destination, the tear sac and the bone beside it, by different routes. External DCR is the traditional approach: a small incision is made on the side of the nose, and a piece of bone is removed to expose the lining of the nasal cavity underneath. The tear sac is then stitched directly to that lining, creating the new drainage opening under direct vision.

Endoscopic, or endonasal, DCR reaches the same tear sac and bone entirely from inside the nostril, using a thin telescope called an endoscope to see what would otherwise need an external cut to view. There is no skin incision at all with this approach, which is its most obvious appeal. What it asks of the surgeon is different rather than lesser, working through a narrower field with instruments rather than a direct open view.

Neither technique is straightforwardly superior, and the published figures are close enough that I would rather quote them by source than average them into one number. The Cambridge unit reports a successful outcome in around 90 percent of patients after external DCR and about 85 to 90 percent after endoscopic DCR. The Leeds unit reports 85 to 90 percent for relief of watering after external DCR, over 95 percent for preventing further infection, and fewer than one in ten operations failing. Where two units quote slightly different numbers, that reflects real variation in technique, case mix and follow-up, not one approach being quietly worse. I choose between them based on your anatomy, your nasal lining, and whether a visible scar matters to you, not a blanket preference.

Will I be put under general anaesthetic?

Most commonly, yes. DCR is normally done under general anaesthetic, so you are asleep throughout and remember nothing of the procedure itself. Some centres also offer it under local anaesthetic, with sedation to keep you comfortable, for patients where that is the more suitable option. This is a conversation to have directly with whoever is operating on you, since it depends on your general health as much as the surgery itself, and it is exactly the kind of question that separates a proper preoperative consultation from a rushed one. If you are still working out who that surgeon should be, I have written a separate guide on how to choose an eyelid surgeon and the credentials actually worth checking.

What are the silicone tubes for after DCR?

Once the new channel between the tear sac and the nose is created, it needs to stay open while the surrounding tissue heals around it, and raw, freshly cut tissue has a tendency to want to close back over any gap. Thin silicone tubes are threaded through the new opening to hold it patent during that healing window, functioning much like a stent does elsewhere in the body. They typically remain in place for around six weeks before being removed in a clinic visit, rather than a second operation. Endoscopic DCR in particular tends to use this tubing as a routine part of the procedure, since there is no external wound holding tissue apart in the way an external incision can.

What does recovery from DCR actually look like?

Recovery is best understood as a range, not a single countdown, because it varies from person to person and between the two techniques. In the first week or two you can expect some swelling and bruising around the eyelids, which gradually settles. Two practical restrictions matter more than people expect: avoid blowing your nose for around the first ten days, since the pressure can disturb the healing tissue, and hold off on vigorous exercise or swimming for about two weeks while everything settles internally.

Beyond that, guidance varies sensibly by unit. Some surgeons frame it as taking it easy for the first week and staying off work until your first follow-up appointment, rather than fixing an exact date in advance, because healing pace genuinely differs between patients. This is a gentler recovery than many people brace themselves for, closer to the pattern I describe for eyelid surgery recovery generally than to anything requiring weeks off your feet.

Will DCR leave a visible scar?

This is usually the question underneath all the other questions, and I would rather answer it plainly than let it sit unspoken. External DCR does leave a small scar on the side of the nose, at the site of the incision. The nose, fortunately, tends to heal well in this respect, and most people find the scar fades substantially over three to six months. The Cambridge unit's own follow-up found only around 3 percent of patients still noticed the scar at three months, and the Leeds unit describes it as becoming almost invisible by three to six months, which tells you how far it typically fades rather than that it disappears for everyone overnight. Endoscopic DCR avoids this entirely, since there is no skin incision to begin with, which is a genuine reason some patients prefer it where their anatomy suits the approach.

What are the actual risks of DCR surgery?

Every operation carries risk, and I would trust a surgeon less, not more, if they told you otherwise. For DCR, the risks reported by surgical units include infection, which is uncommon, and nosebleeds, which are typically mild in the days after surgery but rarely can be more significant and need attention. The new channel can occasionally narrow again over time, which is why a small proportion of patients need a revision procedure. The silicone tubes themselves can shift, irritate, or very occasionally break. Rarely, a leak of the fluid that surrounds the brain has been reported as a complication of the bone work involved, which is one reason this operation belongs with a properly trained oculoplastic or ENT surgeon rather than being treated as routine.

None of this should be a surprise on the day of surgery. A proper consultation walks through which of these risks genuinely apply to your anatomy and your case, rather than reciting a generic list, and that conversation is as much a part of good DCR surgery as the operation itself. Watery eyes sit within a wider group of things that change how an eye looks and feels over time, and if you are trying to work out what else might be contributing, my broader piece on what actually makes eyes look tired covers the rest of that picture. The watery eyes and tear duct conditions I see in clinic sit together there too, of which a blocked duct needing DCR is only one.

A watering eye is often dismissed as a nuisance rather than a medical problem, right up until it is properly assessed and the actual mechanism, obstruction rather than overproduction, becomes clear. DCR is not a cosmetic fix or a last resort to be feared. It is a well established, thoroughly studied operation that solves a specific plumbing problem, and understanding what it actually involves is usually enough to take the fear out of the decision.