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