The Eye

3. Long cylindrical, able to see images in very low light, but not in color.
6. Includes the neurons leaving the eye to the brain.
7. Transparent, circular layer that does most of the focusing
8. Caused by irregularity in the cornea's surface or sometimes in the lens.
9. Made of muscles that dilate or constrict the size of the pupil.
10. Lined with receptor cells that turn light energy into electrical nerve impulses as it heads to the brain.
12. Thick, white membrane that surrounds most of the eye.
14. The sense that trumps most other senses.
15. Close objects look blurry.
17. Need more light to fire an impulse, but sensitive to color, and more perceptive to detail.

1. Layer covering the white part of the eye.
2. Objects more than 20 feet away look blurry.
4. Most sensitive part of the retina
5. Hyperopia is natural in this time of life.
6. Depression of the skull where the eye is placed.
10. Produce photo pigments that are very sensitive to pigments
11. Occurs every few seconds and bathes the eye in tears to wash away dirt and bacteria.
13. Lazy eye.
16. Fine tunes the eye's focus.