Aim To Understand the location of the obstruction and  condition of mucosa in the patients which suffered from the lacrimal duct obstruction diseases through the endoscopy of the lacrimal drainage system.

Methods Retrospective analysis in 244 outpatients of Department of Ophthalmology in Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology during the year in 2008 and 2009, all the patients were examined by the endoscopy of the lacrimal drainage system and analyse the results which we observed.

Results age: between 8 and 92 year of old, average: 41.3 year of old; sex: female 210 cases (86.1%), male 34 cases (13.9%); gender of eyes: left eyes 102 cases (41.8%), right eyes 111 cases (45.5%), both left and right eyes 31cases (12.7%) (Just one eye of the two which seems more seriously was examined). All the patients above, the superior lacrimal canal obstructions were 2 cases (0.8%), the inferior lacrimal canal obstructions were 13 cases (5.3%), the general lacrimal passage obstructions were 19 cases (7.8%), the nasolacrimal duct obstructions were 164 cases (67.2%), two or more parts of obstructions were 46 cases (18.9%). The mucosa conditions of each lacrimal passage were different, for example, hyperemia, hemorrhage, fibrous membranes, and cicatrisation and so on, but the mucosa of lacrimal canal and lacrimal sac were obviously showed hyperemia, and the mucosa of nasolacrimal duct distinctly displayed fibrous membranes.

Conclusion we can observe the obstructive locations and mucosa of the lacrimal passage directly and effectively  through the  endoscopy of the lacrimal drainage system, we can choose different surgical prodecures according to the obstructive location and the mucosa condition.