Best irrigating fluid for phacoemulsification is
**Core Concept**
Phacoemulsification is a modern cataract surgery technique that requires a suitable irrigating fluid to maintain ocular homeostasis and prevent complications. The ideal irrigating fluid should have a balanced electrolyte composition, pH, and osmolarity to ensure proper wound healing and minimize post-operative complications.
**Why the Correct Answer is Right**
The correct answer is **B. Balanced Salt Solution (BSS)**. BSS is the most commonly used irrigating fluid for phacoemulsification due to its balanced electrolyte composition, which closely resembles the natural aqueous humor of the eye. It contains sodium chloride, sodium bicarbonate, potassium chloride, and calcium chloride, which helps maintain the delicate balance of ions and pH within the eye. This ensures proper wound healing, prevents intraocular pressure (IOP) fluctuations, and minimizes the risk of post-operative complications.
**Why Each Wrong Option is Incorrect**
* **Option A:** Is not a suitable irrigating fluid for phacoemulsification as it lacks the necessary electrolytes and pH balance to maintain ocular homeostasis.
* **Option C:** Is a hypertonic solution, which can cause cellular dehydration and osmotic shifts, leading to post-operative complications such as corneal edema and visual disturbances.
**Clinical Pearl / High-Yield Fact**
Remember that the choice of irrigating fluid is critical in phacoemulsification, and BSS is the gold standard due to its balanced electrolyte composition and pH. Always verify the composition and pH of the irrigating fluid before starting the procedure to ensure optimal patient outcomes.
**Correct Answer:** B. Balanced Salt Solution (BSS)