J Korean Ophthalmol Soc.  2008 Aug;49(8):1209-1214. 10.3341/jkos.2008.49.8.1209.

Long-term Outcome of Nasolacrimal Duct Obstruction Treated with Nasolacrimal Polyurethane Stents (Song's Stent)

• Suk KW
• Kim SS

• KMID: 2211722
• DOI: http://doi.org/10.3341/jkos.2008.49.8.1209

Abstract

PURPOSE
This study was carried out to evaluate and investigate the long-term outcome of placement of 25 plastic nasolacrimal stents (Song's stents) without fluoroscopic guidance for the treatment of obstructed nasolacrimal ducts.
METHODS
The medical records of 25 patients who had had Song's polyurethane stents placed between 1997 and 2003 were reviewed. The patients included 17 women and 8 men who ranged in age from 22 to 79 years (mean, 57.9 years). The mean follow-up period was 54 months.
RESULTS
The overall technical success in this study was 92% (23 of 25 eyes), with a 91% (21 of 23 eyes) short-term success rate. Of the 21 stents deployed, at the end of this study, 20 stents (95%) had been occluded. The median duration of stent patency was 38 months. The interquartile range of stent patency (75%~25%) were 26 and 50 months, respectively.
CONCLUSIONS
Although nasolacrimal stenting with Song's stents is a relatively simple and safe procedure and is a useful alternative in elderly patients or patients in poor general condition, nasolacrimal stenting with Song's stents does not meet the requirement of long-term efficacy for epiphora resolution.

Keyword

Nasolacrimal duct obstruction; Nasolacrimal stent; Song's stent; Stent patency

MeSH Terms

Aged
Female
Follow-Up Studies
Humans
Lacrimal Apparatus Diseases
Male
Medical Records
Nasolacrimal Duct
Plastics
Polyurethanes
Stents
Plastics
Polyurethanes

Figure

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  Figure 1. Song's nasolacrimal duct stent set. a. Ball guide wire (W); b. Stent kit=Teflon sheath (T), Lacrimal stent (L), Pusher catheter (P); c. Lacrimal hook (H)

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  Figure 2. Kaplan-Meier curve shows the cumulative stent patency rate. (median, 38 months; interquartile range, 26∼50 months)

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  Figure 3. Brownish precipitates in polyurethane nasolacrimal stent lumen are shown.

Reference

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