The Kaneka Stent

SilbertKanekaA blockage can occur at any point in the tear drainage system, called a nasolacrimal duct obstruction, from the puncta to your nose. When that happens, your tears don’t drain properly, giving you watery eyes and increasing your risk of eye infections and inflammation.

Depending on the severity of your blockage, surgical treatment may be recommended. For a partial blockage of your tear drainage system, a stint is recommended.

David Silbert, MD, FAAP conducts this procedure endoscopically and it is often referred to a Keneka procedure.


Before a stent procedure, patients will first have a probe and irrigation (see probe and irrigation handout) either in the office for adults or at the outpatient surgery center for young children.

A Kaneka Stent  

The Kaneka Lacriflow Stent is a self-retaining stent with a wider inner diameter and portion distal than other stents available, which can lead to better improvement of your tear drainage system during and after removal. The stent is also self retaining: that means that the stent does not need to be tied to the nose or removed through the outside of the nose. It can be removed in the office at the punctum.

The Procedure

The Kaneka stent is inserted endoscopy and the procedure can be conducted under local anesthetic in the office, or at an outpatient surgery center. A small loop of tubing will stay visible in the corner of your eye, and the tubes are generally left in for about three months before they are removed. Possible complications include inflammation from the presence of the tube.

Post-Surgical Follow Up

Postoperative care frequently includes the use of a topical antibiotic and corticosteroid eyedrops, as well as oral antibiotics and/or corticosteroid.

Why Dr. Silbert

Dr. Silbert is one of only surgeons in the country who utilize the Kaneka Stent and perform stenting surgery. It is the newest and best way to treat chronic and partially blocked tear ducts.

Dr. Silbert also performs this procedure endoscopically. This means, there is on incision on the outside of the face and there is no scarring. Performing the procedure endoscopically also means the surgery is less invasive and safer for the patient.

In addition, removal of the stents is safer, easier, and causes far less stress and hassel for the patient.