The standard sutureless cataract surgery done with phaco-emulsificaton and foldable IOL has an incision of:
**Core Concept**
The question requires knowledge of cataract surgery techniques, specifically the incision size associated with sutureless phaco-emulsification and foldable intraocular lens (IOL) implantation. This concept is crucial for understanding the principles of minimally invasive cataract surgery.
**Why the Correct Answer is Right**
The standard sutureless cataract surgery typically involves a small incision of 2.8-3.2 mm in size. This size allows for the insertion of foldable IOLs and enables the use of phaco-emulsification, a technique that breaks up the cataractous lens into small pieces using ultrasonic energy. The small incision size reduces post-operative trauma, promotes faster healing, and minimizes the risk of complications such as infection and astigmatism.
**Why Each Wrong Option is Incorrect**
* **Option A:**
* This incision size is too small for effective phaco-emulsification and foldable IOL implantation, making it impractical for standard sutureless cataract surgery.
* **Option B:**
* This incision size is too large, potentially leading to increased post-operative trauma, higher risk of complications, and the need for sutures, which contradicts the principles of sutureless surgery.
* **Option C:**
* This incision size is not commonly used in standard sutureless cataract surgery, and its use may not provide the benefits associated with the 2.8-3.2 mm incision size.
**Clinical Pearl / High-Yield Fact**
When performing sutureless cataract surgery, it is essential to maintain a balanced intraocular pressure and ensure proper wound closure to prevent post-operative complications.
**Correct Answer: C. 3.5 mm**