R R

What Is a Lacrimal Syringe?

A lacrimal syringe is a small syringe used by an eye care professional to rinse the tear drainage system. It is often used with a tiny tip or cannula that sits at the tear duct opening on the eyelid. By gently flushing sterile fluid, the clinician can check whether tears can flow through the ducts normally. This helps explain symptoms like constant watery eyes or repeated discharge. It is a common in-office tool and is usually quick to use.

Link to This Resource Page

Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.

To display this...

What Is a Lacrimal Syringe?

A lacrimal syringe is a small syringe used by an eye care professional to rinse the tear drainage system. It is often used with a tiny tip or cannula that sits at the tear duct opening on the eyelid. By gently flushing sterile fluid, the clinician can check whether tears can flow through the ducts normally. This helps explain symptoms like constant watery eyes or repeated discharge. It is a common in-office tool and is usually quick to use.

read more about lacrimal syringe ...

Copy this HTML:

Copy HTML Copied!

What Is a Lacrimal Syringe Used For?

It is used to test if the tear drainage pathway is open or blocked. It can also help clear mild buildup or mucus when a doctor thinks drainage is sluggish. The test can guide next steps, like whether you need more imaging or a referral for tear duct treatment. Doctors pair it with an eyelid and puncta exam to get a full picture.

What Does Tear Duct Flushing Feel Like?

Most people feel pressure or a brief ?full? sensation near the inner corner of the eye. Numbing drops are often used to make the process more comfortable. You might taste a salty flavor in your throat if the fluid reaches the nose, which can be a helpful clue. Any irritation usually fades quickly after the exam.

What the Results Can Mean

If the fluid flows easily and you taste saline, it often suggests the pathway is open. If fluid comes back out of the puncta or the other eye, it can suggest narrowing or blockage. Thick mucus coming back can point to irritation or infection in the drainage system. Your doctor will match the result with your symptoms to decide what to do next.

What to Do After the Test

Most people can return to normal activities right away. You may have mild watering or irritation for a short time, especially if the area was already inflamed. Your doctor may prescribe drops if there are signs of infection or significant irritation. Contact your clinic if you develop worsening pain, swelling, or pus-like discharge.

FAQs on Lacrimal Syringe

Is a lacrimal syringe the same as a needle?

No. While it is called a syringe, the tip used for tear duct flushing is designed for the eyelid opening and is not used like a skin injection. Numbing drops are typically used first. The goal is gentle flushing, not a shot. Your clinician can show you the small tip before starting.

How long does flushing take?

The flushing itself often takes only a few minutes. The full visit may take longer because your doctor will examine your eyelids and tear openings first. In some cases, both sides are checked for comparison. Your clinic can tell you what to expect for your specific exam.

Can it confirm a tear duct blockage?

It can strongly suggest blockage if fluid cannot pass forward and instead refluxes back out. However, it may not always show exactly where the narrowing is. If needed, your doctor may order imaging or use other tests to locate the problem. Results are best interpreted with the full exam.

Is tear duct flushing safe?

For most people, yes, especially when performed by trained eye care staff. Mild irritation or temporary watering is common. Infection and injury are uncommon but possible, so it is important to report sharp pain or worsening swelling. Following aftercare instructions helps keep risk low.

References

Blocked Tear Duct (Nasolacrimal Duct Obstruction). Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/17260-blocked-tear-duct-nasolacrimal-duct-obstruction. Updated January 19, 2024.

What Is a Blocked Tear Duct? American Academy of Ophthalmology (AAO). https://www.aao.org/eye-health/diseases/what-is-blocked-tear-duct. March 1, 2015.

Lacrimal Gland Botulinum Toxin Injection for Epiphora Management. American Academy of Ophthalmology (AAO). https://eyewiki.org/Lacrimal_Gland_Botulinum_Toxin_Injection_for_Epiphora_Management. January 4, 2026.

Nasolacrimal Duct Obstruction. National Institutes of Health (NIH). https://www.ncbi.nlm.nih.gov/books/NBK532873/. Updated August 8, 2023.

How Tears Work. National Eye Institute. https://www.nei.nih.gov/learn-about-eye-health/healthy-vision/how-eyes-work/how-tears-work. Updated August 6, 2025.