Certified Paraoptometric (CPO) Practice Exam 2025

Where is the posterior chamber located in the eye?

1. Behind the lens and in front of the retina

2. Behind the iris and in front of the lens

3. In the center of the macula

4. In the sclera

The correct answer is: Behind the iris and in front of the lens

The posterior chamber of the eye is indeed located behind the iris and in front of the lens. This small space is filled with aqueous humor, a clear fluid that nourishes the eye and helps maintain intraocular pressure. It plays a crucial role in the eye's overall health and function. The posterior chamber is part of the anterior segment of the eye, which also includes the anterior chamber located between the cornea and iris. This anatomical positioning is important for understanding various eye conditions and their treatments. Other options do not accurately describe the location of the posterior chamber, as they refer to areas that misplace its anatomical relationship with surrounding structures.