Abstract
Objective To investigate the suitability of upper canalicular probing in locating the medial cut end of lower canalicular laceration with medial canthal ligament eculsion. Methods A case-control study. Fifty-six patients(42 males, 14 females)with lower canalicular and medial canthal ligament lacerations were randomly and equally divided into 2 groups. All patients underwent canalicular lacerations repair with bicanalicular silicone intubation. Upper canalicular probing was introduced in group A(n=30)for locating the medial cut end of lower canalicular lacerations, and direct searching were performed in group B(n=26). In both groups, the silicone tubes were kept in the lacrimal passage for 3 months. Postoperative follow up ranged from 6-12 months. Outcomes were compared between 2 groups, considering the location of canalicular laceration, time for locating the medial cut end, success rate of free lacrimal passage repair, and complications. Results The 56 patients with lower canaliular lacerations were repaired successfully. The total free lacrimal passage reconstruction was achieved in 52 patients(28/30 in group A, 24/26 in group B). There was no significant difference in the 2 groups(8.0±0.6mm in group A, 7.9±0.6mm in group B)in the distance between the lower punctum and the lateral cut end of canalicular laceration. Time for locating the medial cut end was significantly shorter in group A(90±41s)than in group B(202±78s). One patient had slight ectropion in group A. There was no inner canthus deformity or other complications in both groups. Conclusions The upper canalicular probing technique can help to reduce the time of locating the medial cut end of lower canalicular laceration with medial canthus ligament evulsion. Key words: Canalicular laceration; Canalicular probing; Medial canthus ligament evulsion
Published Version
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