External dacryocystorhinostomy is tear duct surgery that creates a new drainage channel between the tear sac and the nose using a small skin incision beside the nose.
Why external DCR is done
When the nasolacrimal duct blocks, tears overflow down the cheek and infections of the tear sac can recur. External DCR bypasses this blockage so tears can drain properly again.
- Typically recommended for adults with long standing watering and confirmed duct blockage
- Helps reduce repeated painful swellings at the inner corner of the eye
- Allows the surgeon direct access and an excellent view of the tear sac
- Often has high long term success rates when aftercare is followed
What to expect from surgery and recovery
The operation is usually done under local anaesthetic with sedation or general anaesthetic. A fine incision is made near the bridge of the nose, bone is opened, and the tear sac is joined to the nasal cavity, often with a temporary silicone stent.
- Bruising and swelling around the eye and nose are common for a week or two
- The small scar usually fades well over several months
- Nasal sprays and eye drops keep the new passage clean and comfortable
- Contact the team urgently if pain, fever, or swelling suddenly worsen
