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A lacrimal probe is a thin, smooth instrument used to gently pass through the punctum and tear drainage channels to assess or treat blockage. It is commonly used for tear duct probing in congenital nasolacrimal duct obstruction in infants and young children. Probes can also help evaluate canalicular injury or confirm patency during lacrimal procedures. Probing is often paired with irrigation to check whether fluid can reach the nose.
read more about lacrimal probe ...Lacrimal probes support both diagnosis and treatment of drainage problems.
The clinician typically dilates the punctum, then inserts the probe gently while following the natural curve of the canaliculus. The probe is advanced into the lacrimal sac and down the nasolacrimal duct to the nasal cavity in standard congenital obstruction probing. Irrigation with saline may be used afterward to confirm flow and clear debris. In young children, probing is often done under general anesthesia for safety, although selected infants may undergo office-based probing with topical anesthesia.
Infants with persistent tearing and discharge from congenital nasolacrimal duct obstruction are common candidates when conservative care has not resolved symptoms. Adults may need probing as part of a diagnostic workup for suspected canalicular blockage or to assess scarring after infection or surgery. Probing can also be used during evaluation of medial eyelid trauma to confirm canalicular involvement. The decision is based on symptoms, exam findings, and results of drainage tests.
Complications are uncommon but can include bleeding, creation of a false passage, infection, and temporary swelling. Antibiotic drops may be prescribed after probing, especially if discharge was present. Parents are often given instructions on observing for redness, fever, or worsening discharge. Follow-up helps confirm symptom improvement and determine whether additional treatment such as stenting is needed.
It can cause discomfort, which is why topical anesthesia is used and many children undergo the procedure under general anesthesia. After the procedure, mild irritation or tearing can occur for a short time.
Many children improve after probing, especially when it is done in appropriate candidates. Success varies based on age, blockage type, and whether there are other anatomical issues, so your clinician will discuss expected outcomes.
Yes. Probing can help evaluate canalicular narrowing, scarring, or injury and may be part of planning for other lacrimal procedures. Adults are more likely to need additional interventions if obstruction is severe.
Yes. If symptoms persist, repeat probing or escalation to silicone intubation or other procedures may be considered. Decisions are guided by follow-up findings and the suspected level of obstruction.
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