Vision

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Across
  1. 2. narrowing of the pupil to admit less light
  2. 5. Transparent mucous membrane that lines the eyelids and covers the anterior surface of the eyeball (except for the cornea)
  3. 8. Receptors in the eyes that respond to light
  4. 9. Bending of light rays so they focus on the retina
  5. 11. Photoreceptors that are most active in bright light; responsible for sharp, color vision.
  6. 12. Transparent extension of sclera that sits over the iris and admits light into the eye
Down
  1. 1. The process by which the curvature of the lens changes so the eye can focus on a near object.
  2. 3. Photoreceptors responsible for night vision; cannot distinguish colors
  3. 4. widening of the pupil to admit more light
  4. 6. The process by which the eyes move (often toward each other) so that light rays fall on corresponding spots on each retina
  5. 7. Outermost layer of the eye; formed from dense connective tissue
  6. 10. Ring of colored muscle in the middle layer of the eye; regulates the diameter of the pupil