4David H. Verity, Geofrey E. Rose Lacrimal Canalicular Inflammation and Occlusion: Diagnosis and Management[J]. Essentials in Ophthal- mology, 2010, 67-77, DOI: 10.1007/978-3-540-85542-2-4.
5Sun X, Liang Q, Luo S,et al. Microbiological analysis of chronic dacryocystitis[J]. Ophthalmic Physiol Opt, 2005,25(3):261-263.