Uveitis and Conjunctivitis

Uveitis and Conjunctivitis

Anatomy of the Uveal

The uveal tunic, also known as the uveal, consists of three basic elements which includes; the iris forward, the ciliary body and the choroid behind. The iris is the most anterior portion of the uveal and it is a pigmented structure, which gives color to the eye and a hole, and the pupil. These dilation reflexes regulate the amount of light entering the eye through the pupil. The Iris is located in the aqueous humor between the cornea and lens, thus separating the anterior chamber of the posterior chamber of the eye. The iris is innervated by fibers of the nervous system that activate dilator muscles and sphincters responsible for the dilation and constriction pupil. The ciliary body is represented by a thickening of the uveal crown located behind the iris. This is a ring of tissue muscle that produces a substance called aqueous humor fluid; his muscles hold the lens, and alter the shape. The choroid is a vascular layer, lining the inside of the globe. This is the nutritive tissue of the eye: it delivers oxygen and nutrients that cells need for their metabolism (Garg, 2012).

Anatomy of Conjunctiva

The conjunctiva is a clear mucous membrane consisting of columnar squamous epithelium, connective tissue and lymphoid tissue. It covers the back of the eyelids (palpebral conjunctiva or tarsal) and then it continues on the front of the eyeball known as (bulbar conjunctiva) to the periphery of the cornea (limbus). It forms teo fornices consisting of an extensive amount of mucous cells: one upper and one lower and two songs: external and internal where it forms a fold known as wattles containing hair follicles, sebaceous glands and serous.

It brings the innermost layer of the tear film, i:e; mucosal layer is in direct contact with the corneal and conjunctival epithelia, the middle layer is the aqueous from the lacrimal gland and the outer lipid is produced by glands meibomian eyelid. Furthermore, the conjunctiva is seen as a barrier between the eyeball and the environment (Conjunctivitis, 2003). 

Anatomy of the eye lids

The lids are an important organ of the human eye, protecting it from minor mechanical particles from drying and direct sunlight. Eyelids are complex folds in the interior of which there are a number of special units. On the outside of the lid is covered with skin. The skin is the thinnest in the age of the human body, and heals better and faster than the skin on any other body part. The thickness of the dermis is less than a millimeter, and it lies just below the circular muscle of the eye that controls the mobility of the century. The circular muscle of the eye - a flat muscle, which occupies the outer surface of the eyelids, the periphery of the circle orbit, in part comes in the temporal area. Lower muscle bundles come into the cheek area. The muscle consists of three parts: the age-old, orbital and lacrimal. The age-old part of the muscle closes the ...