What is tear duct obstruction removal?
Tear duct obstruction removal is a procedure that clears or eliminates blockages within the tear drainage system to restore the normal flow of tears from the eye to the nasal cavity. When the tear drainage pathway becomes partially or fully blocked, tears accumulate on the eye's surface and overflow onto the face, a condition known as epiphora. In some cases, the stagnant tears within the obstructed system create an environment where bacteria can grow, leading to recurrent infection of the tear sac.
The goal of tear duct obstruction removal is to restore a clear, functional drainage pathway with the least invasive approach appropriate for the type and location of the blockage. In some cases, the obstruction can be cleared directly through minimally invasive techniques. In others, a more involved surgical approach is needed to address the underlying cause and prevent the blockage from recurring.
Who needs tear duct obstruction removal?
Tear duct obstruction removal is recommended when a blockage within the tear drainage system is causing persistent symptoms that have not resolved with conservative management. Common indications include:
- Persistent excessive tearing or watery eyes caused by a confirmed obstruction within the drainage system
- Dacryoliths — small stones or calcified deposits that have formed within the tear sac or drainage channels and are obstructing tear flow
- Scar tissue within the canaliculi or nasolacrimal duct following prior infection, inflammation, or injury
- Narrowing of the puncta or canaliculi that is preventing adequate tear drainage
- Recurrent dacryocystitis driven by an underlying obstruction that has not been fully addressed
- Mucous plugs or debris accumulating within the drainage system and causing intermittent or persistent blockage
- Failed prior conservative treatments such as probing or irrigation that have not provided lasting relief
What should I expect during tear duct obstruction removal?
Prior to the procedure, you will meet with your oculofacial plastic surgeon for a comprehensive evaluation. During this appointment, your surgeon will:
- Examine the tear drainage openings and assess the degree of tearing and any associated symptoms
- Probe and irrigate the drainage system to confirm the location and nature of the obstruction
- Review imaging of the drainage system if obtained, such as dacryocystography, to map the extent of the blockage
The technique used for tear duct obstruction removal depends on the type, location, and extent of the blockage:
- Probing and irrigation is the simplest approach and is used for soft obstructions, mucous plugs, or mild narrowing within the drainage channels.
- Dacryolith removal is performed when a stone has formed within the tear sac or drainage channels. Dacryoliths are removed through a small incision over the tear sac or, in some cases, through an endoscopic approach through the nasal cavity.
- Canalicular obstruction removal addresses scar tissue or stenosis within the canaliculi. Depending on the extent and location of the scarring, treatment may involve probing and dilation, laser-assisted canaliculoplasty to open the narrowed channel, or more involved surgical reconstruction of the canaliculus when scarring is extensive.
- Punctoplasty is a small surgical procedure that permanently enlarges the punctal opening to improve tear entry into the drainage system.
- Dacryocystorhinostomy (DCR) may be recommended when obstruction is located at the level of the tear sac or nasolacrimal duct and cannot be adequately cleared through simpler techniques. Rather than removing the obstruction directly, DCR creates a new drainage pathway that bypasses the blocked segment entirely.
What should I expect after tear duct obstruction removal?
Recovery varies depending on the technique used. Minor in-office procedures such as probing and punctal dilation require little to no downtime, while more involved surgical approaches require a short recovery period.
Following more involved procedures, in the first several days it is normal to experience:
- Mild swelling or tenderness at the inner corner of the eye
- Watery eyes or nasal discharge as the drainage system adjusts following the procedure
- Awareness of a silicone stent if one was placed, which may be faintly visible at the inner corner of the eye
- Mild discomfort at the treatment site
When a silicone stent has been placed, it is typically removed between six weeks and three months after the procedure. Most patients notice an improvement in tearing once the obstruction has been cleared and the drainage system has healed.
What are the risks of tear duct obstruction removal?
Tear duct obstruction removal procedures range from in-office treatments to more involved surgical approaches. As with any surgical procedure, there are certain risks, which may include:
- Incomplete removal of the obstruction requiring repeat treatment
- Recurrence of the obstruction or stenosis over time
- Infection at the treatment site
- Scarring within the drainage channels following treatment
- Failure of the drainage system to resume normal function despite clearance of the obstruction
- Premature displacement of the silicone stent if one was placed
- Granuloma formation around the stent
- Bleeding during or following surgical procedures
- Need for a more involved procedure such as DCR if simpler removal techniques do not provide lasting relief
Persistent watery eyes caused by a blocked tear duct will not resolve on their own once a true obstruction is present. Whether the blockage is caused by a stone, scar tissue, or narrowing of the drainage channels, clearing the obstruction restores the drainage function the eye depends on. The oculofacial plastic surgeons at The Iowa Clinic will evaluate your tear drainage system and determine the most appropriate approach for your situation. Call 515.875.9480 to schedule an appointment.