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The episclera is the outermost layer of the sclera (the white of the eye). [1] It is composed of loose, fibrous, elastic tissue and attaches to Tenon's capsule. [1]A vascular plexus is found between the bulbar conjunctiva and the sclera consisting of two layers of vessels, the superficial episcleral vessels and the deep episcleral vessels.
In the anatomy of the eye, the conjunctiva (pl.: conjunctivae) is a thin mucous membrane that lines the inside of the eyelids and covers the sclera (the white of the eye). [1] It is composed of non-keratinized, stratified squamous epithelium with goblet cells , stratified columnar epithelium and stratified cuboidal epithelium (depending on the ...
The episclera is a thin layer of tissue that lies between the conjunctiva and the connective tissue layer that forms the white of the eye . Episcleritis is a common condition, and is characterized by the abrupt onset of painless eye redness. There are two types of episcleritis, nodular and simple.
The sclera's blood vessels are mainly on the surface. Along with the vessels of the conjunctiva (which is a thin layer covering the sclera), those in the episclera render the inflamed eye bright red. [6] In many vertebrates, the sclera is reinforced with plates of cartilage or bone, together forming a circular structure called the sclerotic ring.
Tenon's capsule (/ t ə ˈ n oʊ n /), also known as the Tenon capsule, fascial sheath of the eyeball (Latin: vagina bulbi) or the fascia bulbi, is a thin membrane which envelops the eyeball from the optic nerve to the corneal limbus, separating it from the orbital fat and forming a socket in which it moves.
The anterior ciliary arteries contribute arterial blood supply to the rectus muscles, conjunctiva, sclera, [2] [1] and the ciliary body. [citation needed] The anterior ciliary arteries issue branches to the conjunctiva before piercing the sclera, forming an artieral network in the limbal conjunctiva. They also issue branches to the episclera. [2]
The accessory visual structures (or adnexa of eye, ocular adnexa, etc.) are the protecting and supporting structures of the eye, including the eyebrow, eyelids, and lacrimal apparatus. The eyebrows, eyelids, eyelashes , lacrimal gland and drainage apparatus all play a crucial role with regards to globe protection, lubrication, and minimizing ...
Conjunctival infection, or redness of the sclera surrounding the iris and pupil. Eye irritation has been defined as "the magnitude of any stinging, scratching, burning, or other irritating sensation from the eye". [61] It is a common problem experienced by people of all ages.