A Comparative Study of Two Endoscopic Operations for Lacrimal Duct Obstruction

Lacrimal duct obstruction is common among patients with epiphora,which is seriously affect the quality of life. The treatment principle is to restore or rebuild the lacrimal duct drainage channel. The classic operation type is dacryocystorhinostomy(DCR), which is complex for face-section particularly. However, with the development of endoscopy, the investigators prefer to the silicone nasolacrimal intubation under nasal endoscopy, which is more simple and efficient. With endoscopy, the investigators can see anatomical structures clearly and then can perform the operation much more perfectly.Compare to the classic one called DCR, its short and long term therapeutic effects are equal and even better.Therefore,the latter type does do good to both doctors and patients.

Inclusion criteria

• Clinical diagnosis of Nasolacrimal Duct Obstruction based on a clinical of epiphora and purulent secretion, another punctiform orifices with reflux in subsequent flushing in lacrimal passage irrigation;
• Must be able to withstand surgery
• At least 18 years old
• NO lacrimal tumor and acute inflammation
• Nasolacrimal duct obstruction in digital subtraction dacryocystography
• A sufficient level of education to understand study procedures and be able to communicate with site personnel and adhere to the follow-up;
• Accepted informed consent verbally and in writing

Exclusion criteria

• The Poor Health
• Be allergic to anesthetics
• Lacrimal duct abnormalities
• Lacrimal tumor and acute inflammation
• Children
• The same Surgery failure before

Exit Criteria

• Postoperative infection and persistent inflammation
• Operation failure.