**Question:** Call exner bodies are seen in:-

A. Ciliary processes
B. Ciliary body
C. Choroid
D. Retina

**Core Concept:** Call exner bodies are specialized sensory structures that detect changes in light intensity and facilitate the regulation of accommodation in the human eye.

**Why the Correct Answer is Right:** Call exner bodies are a part of the eye's accommodation system and are located within the ciliary processes. They are composed of photoreceptors, bipolar cells, and horizontal cells, which enable them to detect changes in light intensity and transmit this information to the brain. This information is then used to adjust the lens' shape, thereby facilitating accommodation and maintaining clear vision at different distances.

**Why Each Wrong Option is Incorrect:**

A. Ciliary processes are the right answer because they contain the call exner bodies, which are responsible for detecting changes in light intensity and facilitating accommodation in the eye.

B. Although ciliary body is involved in the accommodation process, the call exner bodies are not present in this structure. Ciliary body contains smooth muscle cells that control the ciliary processes.

C. Choroid is a layer of the eye composed of blood vessels and pigmented cells and does not contain call exner bodies, which are essential for the eye's accommodation mechanism.

D. Retina is responsible for vision, but it does not contain call exner bodies. Call exner bodies are located in the ciliary processes, not the retina.

**Clinical Pearl:** Understanding the anatomy and function of call exner bodies is essential for assessing and treating various ocular conditions like myopia, hyperopia, and presbyopia, which are related to the eye's accommodation ability.

**Correct Answer:** B. Ciliary body

**Explanation:** The correct answer is B) Ciliary body because, although the Call Exner bodies are not present in ciliary body, it plays a crucial role in the accommodation process. The ciliary body contains smooth muscle cells that control the ciliary processes. These muscles are responsible for changing the shape of the lens, which is necessary for adjusting the focus of the eye and maintaining clear vision at different distances.