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Related Experiment Video

Updated: Aug 30, 2025

Author Spotlight: Anterior HR-OCT as a Non-Invasive Tool for Characterizing Ocular Surface Squamous Neoplasia

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Anterior Segment Optical Coherence Tomography for Canaliculitis.

Sumin Yoon¹, Hyunkyu Lee, Sehyun Baek

¹Department of Ophthalmology, Korea University Medicine, Seoul, Korea.

The Journal of Craniofacial Surgery

|September 2, 2022

Summary

Anterior segment optical coherence tomography (OCT) successfully diagnosed a rare case of canaliculitis with a canaliculith. This noninvasive imaging technique identified hyper-reflective signals, aiding in diagnosis where conventional methods failed.

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Area of Science:

Ophthalmology
Medical Imaging

Background:

Canaliculitis, an uncommon lacrimal canaliculi inflammation, is frequently misdiagnosed.
Current diagnostic methods lack a gold standard, prompting exploration of newer techniques like ultrasound biomicroscopy.

Purpose of the Study:

To evaluate the utility of anterior segment optical coherence tomography (OCT) for diagnosing canaliculitis, specifically when a canaliculith is present.
To report the first use of anterior segment OCT in identifying a canaliculith noninvasively.

Main Methods:

Anterior segment optical coherence tomography (OCT) was employed to examine the punctum and lacrimal canaliculus.
Specific OCT findings, including punctal pouting and hyper-reflective signals indicative of a canaliculith, were assessed.
Surgical incision and drainage were performed for confirmation.

Main Results:

Anterior segment OCT successfully diagnosed canaliculitis with a canaliculith noninvasively.
The technique detected hyper-reflective signals corresponding to the canaliculith, a finding not achievable with conventional methods.
OCT also visualized the punctal epithelium and canalicular mucosa status.

Conclusions:

Anterior segment OCT is a valuable noninvasive tool for diagnosing canaliculitis with canaliculith.
This study establishes anterior segment OCT as a novel method for visualizing canaliculitis-related pathologies.
The findings highlight OCT's potential to improve diagnostic accuracy for this uncommon condition.