Dacryocystorhinostomy can be performed via which approach?

• A. External dacryocystorhinostomy
• B. Endoscopic dacryocystorhinostomy
• C. Dacryocystorhinostomy without incision
• D. Dacryocystorhinotomy

Answer: (B)

Dacryocystorhinostomy can be performed through an endoscopic intranasal route, meaning the surgeon goes through the nasal cavity with a endoscope to access the lacrimal sac and create a passage into the nasal cavity. This approach bypasses the obstructed nasolacrimal duct without any external skin incision, so there is no visible scar and the nasal anatomy is directly visualized for precise opening and healing. External DCR is another valid method but it involves a skin incision near the inner eye, which is not the intranasal endoscopic route. The other options either describe an incisionless or nonstandard approach or a different, less common technique. Thus, the endoscopic approach is the modern intranasal method that fits the question.