Dacryocystorhinostomy (DCR) creates a new anastomosis between the lacrimal sac and which structure?

• A Inferior meatus of the nasal cavity, directly
• B Middle meatus of the nasal cavity via the lacrimal bone window ✓
• C Nasopharynx
• D Maxillary sinus

Explanation

In DCR (external or endoscopic), the surgeon creates an ostium through the lacrimal bone (and part of the frontal process of the maxilla) to open the lacrimal sac directly into the middle meatus of the nasal cavity, bypassing the obstructed nasolacrimal duct. Tears drain through this new rhinostomy into the middle meatus. The inferior meatus is where the nasolacrimal duct naturally drains (at Hasner's valve), not the lacrimal sac.

Reference: Khurana Comprehensive Ophthalmology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.