Eye Region Anatomy

Layer containing blood vessels that lines the back of the eye and is located between the retina the inner light-sensitive layer and the sclera the outer white eye wall. Common anular tendon Zinn.

Anatomy Of The Eye Ciliary Muscle Eyes Rectus Muscle

Muscles in the iris dilate widen or constrict narrow the pupil to control the amount of light reaching the back of the eye.

Eye region anatomy. The eye is cushioned within the orbit by pads of fat. Provides support to the retina and functions as the basement membrane of the RPE layer. The orbit is formed by the cheekbone the forehead the temple and the side of the nose.

Majority of the surface features of the ocular region protect the eye. Illustrations Common tendinous ring. In addition to the eyeball itself the orbit contains the muscles that move the eye blood vessels and nerves.

Equator and Mid Peripheral Retina. The ophthalmic artery has numerous branches that supply the muscles that move the eye and surround the eye the eyelid and the eyeball itself. The ocular region consists of the eyeball and related structures.

Behind the anterior chamber is the eyes iris the colored part of the eye and the dark hole in the middle called the pupil. Located in the retina between the choroid and the retinal pigmented epithelium RPE layer. In this article we shall look at the anatomy of the eyelids their layers vasculature and innervation.

Besides the eyes the orbits host several structures that support the eyeballs including muscles vessels nerves and a gland. Tunica fibrosa refers to the outer fibrous layer of the eye. The fluid produced in the eye.

Orbit anterior view The eyes are essential for our daily experience since about 70 of information we gather is by seeingThey are placed within the orbits two cavities in the upper face in the anterior surface of the head. Cornea - The cornea is the clear dome-like structure on the front part of the eyeThe cornea delivers 23 of the refracting power to the eye. Although the eye and skin have distinct anatomy they are both in direct contact with the external environment.

In the center of the macula is the fovea. The lens focuses light toward the back of the eye. It is covered in front by the lids which as they slide over the eye are lubricated by the tears.

Tears flow from the external eye to the nasal cavity by the lacrimal apparatus which is composed of the structures involved in tear production Figure 5. The forehead is referred to as the frontal region. The sclera is the white part of the eye and covers most of the eye surface.

This includes the sclera and the cornea which are continuous with one another. The fovea has the region of best visual acuity. The eyes are referred to as the orbital or ocular region.

Anatomy of the Eye. Facial region encompasses the lower half of the head beginning below the ears. The tunics of the eye consist of the following three layers.

Blood supply and drainage of the eye The eye is supplied by the ophthalmic artery which is the first branch of the internal carotid artery when it has travelled passed the cavernous sinus. There are other aspects of eye anatomy besides the eye itself including the eye socket or orbit and the muscles that move the eye. Directly behind the pupil sits the lens.

The ora serrata is the serrated area between the retina and the ciliary body. The orbit is the bony eye socket of the skull. The eyelids are split into upper and lower portions which meet at the medial and lateral canthi of the eye.

The Aqueous Humor is the watery region in the front of the eyeball. An important component of the eye is the nasolacrimal drainage system which serves as a conduit for the fluid of the eye called tears. Region Of The Eye The eyeball rests in its socket which is hollowed out of the soft parts contained in the bony orbit.

The cheeks are referred to as the buccal region. Structure containing muscle and is located behind the iris which focuses the lens. Extrinsic muscles of eyeball Fascial sheath of eyeball Tenon.

Conjunctiva - The conjunctiva is a mucus membrane that covers the surface of the eye and the inner part of the eyelids. Horizontal cross section of the human eye showing the structures of the eye the visual axis the central point of image focusing in the retina and the optical axis the axis about which the eye is rotated by the eye muscles. The cranial region encompasses the upper part of the head while the.

It is separated into two regions the anterior chamber in front of the iris and the posterior chamber behind it. It is made up of a dense tissue which has a rich supply of blood vessels and nerves and provides attachment for the external muscles of the eye. Eyes are organs of the visual systemThey provide animals with vision the ability to receive and process visual detail as well as enabling several photo response functions that are independent of visionEyes detect light and convert it into electro-chemical impulses in neuronsIn higher organisms the eye is a complex optical system which collects light from the surrounding environment.

This junction marks the transition from the non-photosensitive area of the retina to the photosensitive area of the retina. The region of the eye between the cornea and the lens that contains aqueous humor. Anatomy of the eye.

Eyebrow is a ridge of hair along the superciliary arch above the orbit which protects the eyes against sun and mechanical setback. The opening between the two eyelids is called the palpebral aperture or opening. This is the area of the retina as it extends from the posterior pole.

Anatomy of the Eye.

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