Consists of the iris, ciliary body, and choroid . The iris regulates light entry via the pupil; the ciliary body produces aqueous humor and controls lens shape; the choroid provides oxygen and nourishment to the outer retinal layers.

Based on the importance of "Anatomy and Physiology of the Eye" by AK Khurana, we recommend that:

The human eye is a complex and fascinating organ that enables us to perceive and interpret visual information from the world around us. The eye is a sensory organ that converts light into electrical signals, which are then transmitted to the brain for interpretation. Understanding the anatomy and physiology of the eye is essential for diagnosing and managing various eye disorders.