**Core Concept**
Blunt injury to the eye can result in various complications due to the transmission of force to the delicate ocular structures. The eye's anatomy, comprising the bony orbit, sclera, cornea, iris, lens, and retina, makes it susceptible to damage from blunt trauma. The consequences of blunt eye injury can be severe and may involve the anterior and posterior segments of the eye.

**Why the Correct Answer is Right**
Double perforation of the globe is typically associated with penetrating trauma, not blunt injury. In blunt trauma, the force transmitted to the eye can cause various complications, including hyphema (accumulation of blood in the anterior chamber), iridocyclitis (inflammation of the iris and ciliary body), and retinal detachment. However, double perforation is not a characteristic feature of blunt eye injury, as it requires a sharp object to penetrate the globe in two places.

**Why Each Wrong Option is Incorrect**
**Option A:** Hyphema is a common complication of blunt eye injury, resulting from the rupture of small blood vessels in the iris or anterior chamber.

**Option B:** Iridocyclitis can occur after blunt eye trauma, leading to inflammation of the iris and ciliary body. This can be due to the release of inflammatory mediators or direct trauma to the iris.

**Option D:** Retinal detachment can occur after blunt eye trauma, particularly if there is a posterior vitreous detachment or retinal tear.

**Clinical Pearl / High-Yield Fact**
In cases of blunt eye trauma, it is essential to perform a thorough ocular examination, including a dilated fundus examination, to identify potential complications such as hyphema, iridocyclitis, or retinal detachment.

**Correct Answer:**
✓ Correct Answer: C. Double perforation