Anatomy of the eye ball

Anatomy of the Eye. Eyeball is shaped roughly like the globe of the earth it is said to have poles.

The wall of the eye is composed of three tissue layers or tunics figure 99The outer fibrous tunic consists of the sclera and corneaThe middle vascular tunicconsists of the choroid ciliary body and irisThe inner nervous tunic consists of the retina.

Anatomy of the eye ball. The eyeball consists of three layers. Fibrous vascular pigmented and nervous retina. Functionally the most important layer is the retina which receives the external visual stimuli.

The posterior pole of the eyeball is connected with the optic nerve CN II which conveys the information from the retina to the brain. These muscles move the eye up and down side to side and rotate the eye. The extraocular muscles are attached to the white part of the eye called the sclera.

This is a strong layer of tissue that covers nearly the entire surface of the eyeball. The eyeball consists of three layers. The top layer is the fibrous layer consisting of the sclera and cornea.

The middle layer is the vascular pigmented layer also called the uvea. It consists of the choroid ciliary body and iris. The last layer is the retina or the nervous layer.

The anatomy of the eyeball in humans includes a round pupil though the pupil may be square or elliptical in other animals. The iris lens retina and cornea are just a few parts of this complicated organ. Once light enters the eye it forms an upside-down image on the back of the interior of the eyeball the retina.

Anatomy of the Eye. The sclera is outermost layer of the eyeball. It is the white and opaque part of the eyeball.

Muscles responsible for moving the eyeball are attached to the eyeball at the sclera. At the front of the eyeball the sclera becomes the cornea. The cornea is the transparent dome-shaped part of the eyeball.

ANATOMY OF THE EYE AND ITS FUNCTION Vision is wonderful but you could lose it if you have diabetes. The main parts of the eye Macula Retina Iris Lens Pupil Cornea Iris Vitreous gel Optic nerve. Anatomy of eyeball 1.

GROSS ANATOMY OF THE EYE 2. Cystic structure kept distended by the pressure inside it Shape-oblate spheroid Anterior and posterior poles Equator Dimensions AP-24mm Horizontal-235mm Vertical diameter-23mm Circumference-75mm Vol-65ml Weight-7g 3. Eyeball spheroidal structure containing sense receptors for vision found in all vertebrates and constructed much like a simple camera.

The eyeball houses the retina an extremely metabolically active layer of nerve tissue made up of millions of light receptors photoreceptorsand all of the structures needed to focus light onto it. Through a process called accommodation this lens helps the eye automatically focus on near and approaching objects like an autofocus camera lens. Light focused by the cornea and crystalline lens and limited by the iris and pupil then reaches the retina the.

To keep this shape the eyeball needs a solid structure. The fibrous layer which is made of dense connective tissue and forms the skeleton of the eyeball. This layer has two parts.

The one that makes the outer layer of the smaller sphere called the cornea. And the one that makes the outer layer of the bigger sphere called the sclera. Eyeball is shaped roughly like the globe of the earth it is said to have poles.

Ov e r vei w This chapter will. Describe anatomy blood supply and nerve supply of eyeball Discuss development of the eye. A sagittal section through the eyeball 1 Anatomy of the Eyeball.

3D video anatomy tutorial on the anatomy of the eyeball. In this video the following structures are discussed. - sclera - cornea.

For other uses see Eyeball disambiguation Eyes disambiguation and Ocular disambiguation. Eyes are organs of the visual system. They provide animals with vision the ability to receive and process visual detail as well as enabling several photo response functions that are independent of vision.

Conjunctiva The conjunctiva is a mucous membrane lining the eyelids and covering the anterior eyeball up to the edge of the cornea. At the upper and lower reflections between eyeball and eyelid the conjunctiva forms two sacs the superior and inferior fornices. Bulbus oculi is a spheroidal structure that contains sense receptors for visionThe eyeball contains many structures with each being responsible for different functions.

The eyeball lies in orbit surrounded by the adipose tissueThe eyeball is covered by a thin fascial sheath known as the Tenons capsuleThe eyeball consists of the layers of the eyeball and the. Anatomy of the Eye. The eyeball is a hollow fluid-filled sphere.

The wall of the eye is composed of three tissue layers or tunics figure 99The outer fibrous tunic consists of the sclera and corneaThe middle vascular tunicconsists of the choroid ciliary body and irisThe inner nervous tunic consists of the retina. 3D anatomy tutorial on the eyeball from AnatomyZone. For more videos 3D models and notes visit.