Eye Cancer: Things to Know

By Anonymous -
Cancer of the eye is rare. It damages eyelid by binding of muscles, skin and nerves. When the tumor starts inside the eyeball it is known intraocular cancer. The common intraocular cancers are melanoma and lymphoma. In children, the common eye cancer is retinoblastoma, which is the cancer of the cells of the retina. Cancer cells can spread from eye to other parts of the body when cancer antigen cells begin to grow out of control. Treatment for eye cancer varies- they can be treated surgically, through radiation therapy, freezing/ heat therapy, or laser therapy.
 The eye has 3 major parts: the eyeball, the orbit, and the adnexal structures. Parts of the eye including the conjunctiva, anterior chamber, cornea, lens, iris, ciliary body, orbit, optic nerve, retina and sclera.
                                       

Eyeball
The main part of the eye is the eyeball which is mostly filled with a jelly-like material called vitreous humor. The eyeball has 3 main layers: the sclera, the uvea, and the retina.
 Sclera The sclera is the tough, white covering over most of the outside of the eyeball.
 Uvea The uvea is the middle layer of the eyeball. The most melanomas of the eye develop.
  • The uvea has 3 main parts:
  • The iris is the colored part of the eye (blue/brown).
  • The choroid is a thin, pigmented layer lining the eyeball that sustains the retina and the front of the eye with blood.
  • The ciliary body covers the muscles inside the eye that change the shape of the lens so that the eye can focus on near or far distant objects. Cells that sort aqueous humor, the clear fluid in the front of the eye between the cornea and the lens.

 Retina The retina is the inner layer of cells in the back of the eye. It is made up of particular nerve cells that are sensitive to light. These light-sensing cells are allied to the brain by the optic nerve. When light enters the eye it passes through the lens, which focuses it on the retina. The pattern of light/image appearing on the retina is directly gone through the optic nerve to an area of the brain called the visual cortex.

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