The Eye

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Across
  1. 5. the transparent jellylike tissue filling the eyeball behind the lens.
  2. 6. the pigmented vascular layer of the eyeball between the retina and the sclera; provides blood to the other layers
  3. 8. is a narrow space behind the peripheral part of the iris, and in front of the suspensory ligament of the lens and the ciliary processes
  4. 12. the clear fluid filling the space in the front of the eyeball between the lens and the cornea.
  5. 13. a small depression in the retina of the eye where visual acuity is highest.
  6. 15. functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina.
  7. 16. is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina. Eye color is defined by that of the iris.
  8. 18. a layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.
  9. 19. is the transparent part of the eye that covers the front portion of the eye; retracts/bends light
Down
  1. 1. a ringlike fibrous membrane connecting the ciliary body and the lens of the eye and holding the lens in place — see eye illustration.
  2. 2. the raised disk on the retina at the point of entry of the optic nerve, lacking visual receptors and so creating a blind spot.
  3. 3. A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision and the ability to see objects in dim light (night vision).
  4. 4. the opening of the iris
  5. 7. an oval yellowish area surrounding the fovea near the center of the retina in the eye, which is the region of keenest vision
  6. 9. is the fluid-filled space inside the eye between the iris and the cornea's innermost surface, the endothelium.
  7. 10. transfers visual information from the retina to the vision centers of the brain via electrical impulses.
  8. 11. responsible for color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light.
  9. 14. the part of the eye that connects the iris to the choroid.
  10. 17. the white outer layer of the eyeball