Canalicular dilation is a procedure that widens the tiny tear drainage channels (canaliculi) near the inner corners of the eyelids. It is used to investigate or treat partial obstruction and to facilitate other lacrimal procedures.
How It Is Done
After applying local anaesthetic drops, a fine dilator is gently inserted into the punctum and canaliculus to stretch the opening. Saline may then be irrigated to check for free flow into the nose or to flush out debris.
- Often combined with probing, irrigation, or stent insertion
- Helps relieve narrowings from inflammation or scarring
- May temporarily improve watering or discharge in partial blockages
- Discomfort is usually mild and brief
Role in Management
Canalicular dilation is both diagnostic and therapeutic, helping determine the level of obstruction within the lacrimal system. Persistent or complex blockages may still require more definitive surgery such as DCR.
- Minor blood‑stained tears or soreness can occur after the procedure
- Topical antibiotics or lubricants are sometimes prescribed
- Recurrent narrowing may need repeated dilation or stenting
- Underlying causes such as chronic inflammation should be addressed
