Anatomy and Physiology of the Uveal Tract: Maintaining the Eye’s Internal Balance

Abstract

The uveal tract, comprising the iris, ciliary body, and choroid, is pivotal in maintaining the eye’s internal balance. The iris, with its pigmentation, regulates light entry through pupil control and contributes to eye color variation. The ciliary body, positioned behind the iris, facilitates accommodation by adjusting the lens for focusing at various distances and produces aqueous humor, crucial for intraocular pressure maintenance. The choroid, a vascular layer at the back of the eye, nourishes the retina. Together, these components uphold eye shape, control light entry, and support retinal function. Understanding uveal anatomy and physiology is fundamental to comprehending ocular mechanisms, encompassing both structural integrity and functional dynamics. This book chapter provides a knowledge of uveal anatomy and physiology.