**Core Concept**
Laser photocoagulation is a medical treatment that uses laser light to destroy or shrink abnormal blood vessels in the eye, specifically for treating iris neovascularization, a condition characterized by the growth of new blood vessels in the iris.

**Why the Correct Answer is Right**
The laser procedure most often used for treating iris neovascularization is panretinal photocoagulation (PRP). PRP involves applying multiple laser burns to the peripheral retina to reduce ischemia and subsequent neovascularization. This process works by destroying the ischemic retina, which in turn reduces the production of vascular endothelial growth factor (VEGF) and other angiogenic factors, thereby decreasing the growth of new blood vessels in the iris.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specifically refer to a laser treatment for iris neovascularization. While laser treatments are used for various eye conditions, PRP is the most effective treatment for iris neovascularization.
* **Option B:** This option is incorrect as it does not accurately describe a laser treatment for iris neovascularization. Laser trabeculoplasty is a treatment for glaucoma, not iris neovascularization.
* **Option C:** This option is incorrect as it does not accurately describe a laser treatment for iris neovascularization. Laser iridotomy is a treatment for angle-closure glaucoma, not iris neovascularization.

**Clinical Pearl / High-Yield Fact**
Panretinal photocoagulation is a treatment that requires a careful balance between destroying ischemic retina and preserving vision. A key factor in determining the success of PRP is the extent of retinal ischemia, which can be assessed using fluorescein angiography.

**Correct Answer:** B. Laser trabeculoplasty (Incorrect)
Correct Answer: C. Laser iridotomy (Incorrect)
Correct Answer: A. Panretinal photocoagulation (PRP)