The last class we started to discuss the special senses. The special sense that was focused on was the eyeball. The external structures covering the eyeball include the eyelids (Palpebrae), eyelashes, and eyebrow. Along with the external structures of the eye itself, is the sclera which is the white of the eye and it is made up of collagen and is covered by the conjunctiva, which is the clear layer above the sclera. Other structures include the pupil, which allows light to enter into the eye and the iris which is the color of the eye. These two structures are covered by the cornea which has no blood supply.
The internal structures of the eye consist of the lens which is composed of layers and these layers continue to accumulate throughout the years of life. The lens is held in place behind the pupil by connective ligaments called the Ciliary Body which are located beneath the iris. The gel like substance called Fibrous Humor holds the retina in place without destructive pressure and is the place where the veins and arteries are located and held in place within the eye.
In addition there are three layers also known as tunics of the eye.
Layers
Sclera – Outermost layer
Retina – Innermost Layer
Choroid – Middle Layer
Tunics
Fibrous Tunic- Outermost Layer
Visual Tunic – Innermost layer
Pigmented Tunic – Middle Layer
since I wear contacts I thought i would cover a little anatomy of how the contact sits on a eye.
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Now it's extremely important to take your contacts out every day and clean them so you dont get any infections. All eye doctors do recommend this even if they are monthly contacts.