Across
- 4. carries neural impulses from the eye to the brain
- 6. central focal point in the retina
- 7. adjustable opening in the center of the eye through which light enters
- 9. light sensitive inner surface of the eye
Down
- 1. point at which the optic nerve leaves the eye
- 2. ring of muscle tissue that forms the colored portion of the eye around the pupil and controls size of the pupil
- 3. detects fine details and give rise to color sensations
- 5. necessary for peripheral and twilight vision
- 8. transparent structure behind the pupil that changes shape to help focus images