An 18 year old boy comes to the eye casuality with history of injury with a tennis ball. On examination there is no perforation but there is hyphaema. The most likely source of the blood is –
**Core Concept**
The question tests the understanding of the anatomy of the eye, specifically the location of the iris, ciliary body, and anterior chamber. The presence of hyphaema, which is blood in the anterior chamber, suggests bleeding from one of these structures.
**Why the Correct Answer is Right**
Hyphaema is typically caused by trauma to the eye, which leads to bleeding from the iris or ciliary body. The iris is a vascular structure that can rupture and bleed into the anterior chamber. The ciliary body, which is located behind the iris, can also bleed due to trauma. In this case, since there is no perforation, the most likely source of the blood is the iris.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, so we can't evaluate it.
* **Option B:** This option is not provided, so we can't evaluate it.
* **Option C:** This option is not provided, so we can't evaluate it.
* **Option D:** This option is not provided, so we can't evaluate it.
However, typically the wrong options might include structures that are not directly related to the anterior chamber, such as the vitreous or the retina.
**Clinical Pearl / High-Yield Fact**
In cases of hyphaema, it's essential to monitor the patient's vision and intraocular pressure, as increased pressure can lead to complications such as angle closure glaucoma.
**Correct Answer: C. Ciliary body.**