Normal Histology of the Uvea
The uveal tract consists of three structures – the iris, ciliary body, and choroid. It is a highly vascular structure with both neuroepithelial and connective tissue elements. In addition, the uveal tissue contains muscle fibers, nerves, and melanocytes that provide a pigmented appearance. The pigmentation of the iris may vary depending upon the ethnicity of the individual. A number of pathological changes may affect the uveal tissue elements resulting in inflammation and tissue damage. Permanent damage to uveal tissue structures may result in complications such as posterior synechiae, ciliary body shutdown, and choroidal atrophy. It is important to be well versed with the histology of the normal uveal tissue to understand the pathophysiology of various uveitic entities. This chapter provides an illustrative overview of the normal histology of the uveal tract.
KeywordsRetinal Pigment Epithelium Ciliary Body Ciliary Muscle Posterior Ciliary Artery Pigment Iris Epithelium
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