Dacrocytorhinostomy involves?
**Core Concept**
Dacrocytorhinostomy (DCR) is a surgical procedure aimed at restoring the drainage of tears from the eye to the nasal cavity, bypassing any obstruction in the nasolacrimal duct. This procedure is often performed to treat nasolacrimal duct obstruction, which can lead to chronic tearing, eye redness, and discomfort.
**Why the Correct Answer is Right**
The correct answer is DCR, which involves the creation of a new passage between the lacrimal sac and the nasal cavity. This is achieved by removing a portion of the bone and cartilage that separates the two, allowing tears to drain freely into the nasal cavity. The procedure is typically performed under general anesthesia or local anesthesia with sedation.
**Why Each Wrong Option is Incorrect**
**Option A:** is incorrect because it is a procedure focused on treating glaucoma, not nasolacrimal duct obstruction.
**Option B:** is incorrect because it is a type of surgery used to remove the cataract, not address tear drainage issues.
**Option C:** is incorrect because it is a term related to the treatment of varicose veins, not relevant to DCR.
**Clinical Pearl / High-Yield Fact**
A key aspect of DCR is that it can be performed using a variety of techniques, including external and endoscopic approaches, depending on the surgeon's preference and the patient's anatomy.
**Correct Answer:** D. Dacrocytorhinostomy.