Woo K I, Moon S H, Kim Y D
Department of Ophthalmology, College of Medicine, Sung Kyun Kwan University, Kangbuk Samsung Hospital, Seoul, Korea.
Ophthalmic Surg Lasers. 1998 Jun;29(6):451-5.
Despite the high success rate of external dacryocystorhinostomy (DCR), recurrent tearing after DCR can be troublesome. The authors performed transcanalicular revision in 6 patients with failed DCR.
With the use of a continuous wave Nd:YAG laser with a sclerostomy probe, the internal ostium was reopened by a transcanalicular approach. The authors applied 0.4 mg/ml of mitomycin-C around the opening for 5 minutes intranasally and inserted a silicone tube as a stent.
A total of 7 operations were performed in 6 patients. The operation was successful after the first revision in 5 of the 6 patients, but 1 of the patients required a second procedure.
The transcanalicular laser-assisted revision has several advantages. It is simple and fast, skin incision is avoided, there is good hemostasis, it is less traumatic, and there is less postoperative morbidity.
尽管外置泪囊鼻腔造口术（DCR）成功率很高，但DCR术后反复流泪仍可能令人困扰。作者对6例DCR失败患者进行了经泪小管修复术。
使用带有巩膜造口探头的连续波Nd:YAG激光，通过经泪小管途径重新打开内口。作者在开口周围鼻内应用0.4mg/ml丝裂霉素C 5分钟，并插入硅胶管作为支架。
6例患者共进行了7次手术。6例患者中有5例在首次修复后手术成功，但1例患者需要进行第二次手术。
经泪小管激光辅助修复术有几个优点。它简单快捷，避免了皮肤切口，止血良好，创伤较小，术后发病率较低。
