Arrange the following structure of Angle of Anterior chamber in the order of inside to outside 1 – Ciliary body band 2 – Trabecular meshwork 3 – Schwalbe’s line 4 – Root of lris 5 – Scleral spur
**Core Concept**
The Angle of the Anterior Chamber is a critical area in the eye where the **iris** and **cornea** meet, and it plays a key role in the drainage of **aqueous humor**. Understanding the anatomy of this region is essential for diagnosing and managing **glaucoma**. The structures within this angle are crucial for maintaining normal **intraocular pressure**.
**Why the Correct Answer is Right**
The correct order from inside to outside is: **Schwalbe's line**, **Trabecular meshwork**, **Scleral spur**, **Ciliary body band**, and **Root of iris**. This order makes sense because **Schwalbe's line** is the termination of the **Descemet's membrane** of the cornea, and it is the innermost structure. The **Trabecular meshwork** is responsible for the drainage of **aqueous humor** and is located adjacent to **Schwalbe's line**. The **Scleral spur** is a ridge of tissue that marks the junction between the **sclera** and the **ciliary body**, and it is located near the **Trabecular meshwork**.
**Why Each Wrong Option is Incorrect**
**Option A:** is incorrect because it does not accurately reflect the anatomical arrangement of the structures within the Angle of the Anterior Chamber.
**Option B:** is also incorrect for similar reasons, as the order of structures is not correctly represented.
**Option D:** is incorrect because it misplaces the **Root of iris**, which is actually one of the outermost structures.
**Clinical Pearl / High-Yield Fact**
Remembering the order of structures within the Angle of the Anterior Chamber is crucial for understanding the pathophysiology of **glaucoma** and for performing procedures such as **trabeculoplasty**. The **Trabecular meshwork** is a key site for **aqueous humor** drainage, and any obstruction here can lead to increased **intraocular pressure**.
**Correct Answer:** C. 5, 4, 1, 2, 3