THE HUMAN EYE ANATOMY

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Across
  1. 1. The black circular opening in the center of the iris through which the light enters the eye.
  2. 4. Photoreceptor cells in the retina that are highly sensitive to low light levels and are important for night vision.
  3. 6. The transparent, flexible structure behind the iris that focuses light onto the retina.
  4. 8. A small depression in the retina where visual acuity is highest, containing a high concentration of cone cells.
  5. 9. The cranial nerve that transmits visual information from the retina to the brain.
  6. 11. The light-sensitive layer of tissue at the back of the eye that converts light into electrical signals sent to the brain.
  7. 12. The clear fluid between the cornea and the lens.
  8. 13. Photoreceptor cells in the retina that detect color and are responsible for vision in bright light.
  9. 14. The muscles that control the shape of the lens to focus light onto the retina for clear vision.
  10. 15. The vascular layer of the eye between the retina and the sclera that supplies blood to the retina.
Down
  1. 2. The colored part of the eye that controls the size of the pupil and the amount of light that enters the eye.
  2. 3. The transparent frontal part of the eye that covers the iris and pupil.
  3. 5. The 6 muscles surrounding the eye that control its movement in different directions.
  4. 7. The white, outer layer of the eye that provides protection and structure.
  5. 10. The clear gel-like substance filling the space between the lens and the retina, maintaining the eye's shape.