Journal List > J Korean Ophthalmol Soc > v.59(10) > 1103091

Choi, Kim, Yoo, and Seo: Efficacy of Intraoperative Mitomycin C Eye Drops during and after Dacryocystorhinostomy for Canalicular Obstruction

Abstract

Purpose

This study investigated the efficacy of intraoperative and postoperative mitomycin C eye drops in patients with canalicular obstructions.

Methods

In total, 46 eyes of 46 patients diagnosed with canalicular obstruction at our hospital between June 2012 and June 2016 were analyzed. Canalicular trephination was done and, after applying 0.02% mitomycin C for 3 minutes on the exposed lacrimal sac during endoscopic dacryocystorhinostomy, the area was washed with 20 mL of saline solution, and a silicon tube was inserted. On postoperative day 1, an antibiotic eye drop was applied; beginning on postoperative day 2, 0.02% mitomycin C eye drops were applied, and 0.5% steroid eye drops were applied. Pre- and postoperative anterior segment optical coherence tomography was used to measure the nasal, central, and lateral tear meniscus heights. The extent of functional improvement was assessed by measuring the degree of tear according to Munk's score, and anatomical improvement was assessed using a syringing test.

Results

The nasal tear meniscus height decreased from 571.64 ± 260.51 µm to 267.16 ± 59.25 µm (p = 0.043); central tear meniscus height from 580.16 ± 186.24 µm to 271.14 ± 45.10 µm (p = 0.018); and lateral tear meniscus height from 480.52 ± 260.23 µm to 220.16 ± 63.79 µm (p = 0.029). The functional success rate was 93.5% (43/46), and the anatomical success rate was 95.7% (44/46).

Conclusions

Intraoperative and postoperative mitomycin C and steroid eye drops may be an effective treatment for canalicular obstruction patients and should help increase surgical success rates.

Figures and Tables

Figure 1

Anterior segment optical coherence tomography image of the lower eyelid tear meniscus captured at three points. (A) medial point, the vertical axis of the medial limbus (B) central point, the vertical axis of the corneal center (C) lateral point, the vertical axis of the lateral limbus (D) cross-sectional view. (A–C) arrows indicate vertical line centered at three points. (D) arrow indicates tear meniscus height.

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Figure 2

Improvements of lower eyelid tear meniscus height after intraoperative use of mitomycin C and postoperative mitomycin C eye drops in patients with canalicular obstruction treated with endonasal dacryocystorhinostomy (n = 46, Paired t-test; p<0.05). TMH = tear meniscus height. *Six months after removing silicone tube.

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Table 1

Patients characteristics

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Values are presented as mean ± standard deviation (SD) unless otherwise indicated.

R = right; L = left.

Table 2

Preoperative and postoperative Munk's score

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Values are presented as number (%). ‘0’ means ‘no epiphora’. ‘1’ means ‘occasional epiphora requiring dabbing with a tissue or handkerchief less than twice a day’. ‘2’ means ‘epiphora requiring dabbing two to four times a day’. ‘3’ means ‘epiphora requiring dabbing five to ten times a day’. ‘4’ means ‘epiphora requiring dabbing more than ten times a day or constant tearing’.

*6 months after removing silicone tube.

Notes

Conflicts of Interest The authors have no conflicts to disclose.

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