What is the function of uvea?

The uvea is the middle layer of the eye, comprising the iris, ciliary body, and choroid. Its primary functions include regulating light entering the eye through the iris, controlling the shape of the lens for focusing via the ciliary body, and providing blood supply to the retina through the choroid. Additionally, it plays a role in immune responses and maintaining intraocular pressure. Overall, the uvea is essential for proper vision and eye health.