the vascular layer of the eye is the
middle layer The uvea uvea
title: Uvea text: Uvea The uvea (/ˈjuːvɪə/) (Lat. "uva", grape), also called the "uveal layer", "uveal coat", "uveal tract", "vascular tunic" or "vascular layer" is the pigmented middle of the three concentric layers that make up an eye. The name is possibly a reference to its reddish-blue or almost black colour, wrinkled appearance and grape-like size and shape when stripped intact from a cadaveric eye. Its use as a technical term in anatomy and ophthalmology is relatively modern. The uvea is the vascular middle layer of the eye. It is traditionally divided into three areas, from front to back, the: The prime functions title: Human eye text: layer, known as the fibrous tunic, is composed of the cornea and sclera. The middle layer, known as the vascular tunic or uvea, consists of the choroid, ciliary body, pigmented epithelium and iris. The innermost is the retina, which gets its oxygenation from the blood vessels of the choroid (posteriorly) as well as the retinal vessels (anteriorly). The spaces of the eye are filled with the aqueous humour anteriorly, between the cornea and lens, and the vitreous body, a jelly-like substance, behind the lens, filling the entire posterior cavity. The aqueous humour is a clear watery fluid that is contained title: Choroid text: Choroid The choroid, also known as the choroidea or choroid coat, is the vascular layer of the eye, containing connective tissues, and lying between the retina and the sclera. The human choroid is thickest at the far extreme rear of the eye (at 0.2 mm), while in the outlying areas it narrows to 0.1 mm. The choroid provides oxygen and nourishment to the outer layers of the retina. Along with the ciliary body and iris, the choroid forms the uveal tract. The structure of the choroid is generally divided into four layers (classified in order of furthest away from the title: Sattler's layer text: influence of optical stimuli during eye-growth indicate that the complex function of this tissue is not entirely understood and might be one of the reasons for the frequently found separation in vascular size between Haller's and Sattle's layer. Sattler's layer Sattler's layer, named after Hubert Sattler, an Austrian ophthalmologist, is one of five (or six) layers of medium-diameter blood vessels of the choroid, and a layer of the eye. It is situated between the Bruch's membrane, choriocapillaris and Haller's layer below, and the suprachoroidea above, respectively. The origin seems to be related to a continuous differentiation throughout the growth of title: Uvea text: (i.e., the body's inability to distinguish between them, with resulting misdirected inflammatory reactions). See uveitis, choroiditis, iritis, iridocyclitis, anterior uveitis, sympathetic ophthalmia, and uveal melanoma. Uvea The uvea (/ˈjuːvɪə/) (Lat. "uva", grape), also called the "uveal layer", "uveal coat", "uveal tract", "vascular tunic" or "vascular layer" is the pigmented middle of the three concentric layers that make up an eye. The name is possibly a reference to its reddish-blue or almost black colour, wrinkled appearance and grape-like size and shape when stripped intact from a cadaveric eye. Its use as a technical term in anatomy and ophthalmology is relatively modern.