All About Your Eye

Photo Credit:Zenni Optical

Photo Credit:Kids Health

First Picture

1. Eye lid= movable folds of skin and muscle that can be closed over the eyeball.(this is basically protecting your eye from the outside)
2. Tear Duct=A tear duct is a small tube that drains tears from the eyes. Tears are made in glands under the eyelids. They wash over the eyes to keep them moist and clean. Then, they drain though the tear ducts.
3. Iris=The colored tissue at the front of the eye that contains the pupil in the center. The iris helps control the size of the pupil to let more or less light into the eye.
4. Pupil=The round opening in the center of the iris (the colored tissue that makes the "eye color" at the front of the eye). The pupil changes size to let light into the eye. It gets smaller in bright light and larger as the amount of light decreases.
5. Cornea=The transparent part of the eye that covers the iris and the pupil and allows light to enter the inside.
6. Lens= The lens is a clear, curved structure at the front of the eye behind the pupil. It focuses light rays that enter the eye through the pupil, making an image on the retina (light-sensitive layers of nerve tissue at the back of the eye).
7. Lacrimal Caruncle=The lacrimal caruncle is the small, pink, globular spot at the inner corner, or the medial canthus, of the eye. It contains both oil and sweat glands.
8. Retina=A layer at the back of the eyeball containing cells that are sensitive to light, and that trigger nerve impulses.
9. Lateral Rectus Muscle=A flat shaped muscle, and it is wider in its anterior part
10. Fovea Centralis=A small depression in the retina of the eye where visual acuity is highest. The center of the field of vision is focused in this region, where retinal cones are particularly concentrated.
11. Hyaloid Canal=Cloquet's canal, also known as the hyaloid canal or Stilling's canal, is a transparent canal that runs from the optic nerve disc to the lens traversing the vitreous body. It serves as a perivascular sheath surrounding the hyaloid artery in the embryonic eye
12. Optic Nerve= Each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye.
13. Retinal Blood Vessels=The retinal vessels provide blood to the inner retinal neurons. The avascular photoreceptor layer relies on the choriocapillaris lying beneath the retinal pigment epithelium to supply oxygen by diffusion.
14. Vitreous Body=The clear jelly-like substance that fills the inside of the eyeball
15. Medial Rectus Muscle=The medial rectus is an adductor, and functions along with the lateral rectus which abducts the eye. These two muscles allow the eyes to move from side to side
16. Posterior Chamber=The posterior chamber is between the iris and lens.
17. Suspensory Figaments=A series of fibers that connect the ciliary body of the eye with the lens, holding it in place.
18. Cilary Body and Muscles= A part of the middle layer of the wall of the eye. The ciliary body is found behind the iris and includes the ring-shaped muscle that changes the shape of the lens when the eye focuses. It also makes the clear fluid that fills the space between the cornea and the iris.

1. Cilary Body=shown above
2. Lens=shown above
3. Pupil=shown above
4. Cornea=shown above
5. Aqueous Humor=The clear fluid filling the space in the front of the eyeball between the lens and the cornea.
6. Blood Vessels=The blood vessels within the retina itself that carry oxygen and nutrients are called arteries.
7. Macula= An oval yellowish area surrounding the fovea near the center of the retina in the eye, which is the region of keenest vision.
8. Conjunctiva=The mucous membrane that covers the front of the eye and lines the inside of the eyelids.
9. Sclera=The white outer layer of the eyeball. At the front of the eye it is continuous with the cornea.
10. Chroid=The pigmented vascular layer of the eyeball between the retina and the sclera.
11. Retina=shown above
12. Optic Nerve=shown above