Vocabulary
Across
- 2. Nerve either part of sensory nerves that comprises the second pair of cranial nerves.
- 6. the sensory membrane that lines most of the large posterior chamber of the vertebrate eye and functions as the immediate instrument of vision.
- 8. the opening in the iris,which admits lights into the interior of the vertebrate eye
- 10. the opague muscular contractile diaphragm that is suspended in the aqueous humor
- 12. any of the conical photosensitive receptir cells of the vertebrate retina that function in color vision.
- 13. the automatic adjustment of the eye for seeing at different distances
- 14. a defect of an optical system causing rays from a point to fail to meet in a focal point resulting in a blurred an imperfect image
- 15. a condition in which visual images come to a focus behind the retina of the eye and vision is better for distant than for near objects---also called farsightedness
Down
- 1. any of the long rod-shaped photosensitive receptors in the retina responsive to faint light
- 3. the transparent part of the coat of the eyeball.
- 4. the ability to judge the distance of objects and the spatial relationship of objects at different distances.
- 5. a curved peice of glass or plastic
- 7. the small circular area in the retina
- 9. a condition in which the visual images come to a focus infront of the eye
- 11. the deflection from a straight path undergone by a light rat or a wave of energy