| A | B |
|---|
| Name the white part of the eye. | sclera |
| What is the clear portion of the sclera at the front of the eye? | cornea |
| What is the colored part of the eye called? | iris |
| What controls the size of the eye's pupil? | iris |
| What is the black hole in the front of the eye? | pupil |
| In dim light, does the pupil get smaller or larger? | larger |
| Name the clear fluid found in front of the lens. | aqueous humor |
| What muscles control the shape of the lens? | ciliary bodies |
| Name the layer of light-sensitive nerve cells at the back of the eye. | retina |
| Which type of nerve cells are the most common in the retina? | rods |
| Which type of nerve cells work best in low light conditions? | rods |
| Which type of nerve cells work best in bright light conditions? | cones |
| Which type of nerve cells provide color vision? | cones |
| Which type of nerve cells are most concentrated in the fovea? | cones |
| Name the small dip on the retina which provides your best, sharpest vision. | fovea |
| Name the nerve that connects the retina to the brain. | optic nerve |
| Identify the area of the retina where it joins with the optic nerve. | blind spot |
| Name the clear, jelly-like fluid found behind the lens. | vitreous humor |
| What part of the body does the actual "seeing"? | brain |
| True/False Besides lubricating the eye, tears also kill germs. | true |
| What part of the eye wipes tears over the cornea and brushes away debris? | eyelids |
| If an eye sees at 20 feet, what a normal eye would see from 80 feet, your vision is ....... | 20/80 |
| If an eye sees at 20 feet what a normal eye could only see from 15 feet away, your vision would be ....... | 20/15 |
| What numbers would indicate normal vision in the eye? | 20/20 |
| What name is given to the eye that gives the most accurate view of an object's position? | dominant eye |
| When near objects are sharp but distant objects are blurry, you are ...... | nearsighted |
| If your eyeball is too long, you are ....... | nearsighted |
| If distant objects are sharp but near objects are blurry, you are ...... | farsighted |
| If your eyeball is too short, you are ..... | farsighted |
| If your vision is blurry both near and far, you could suffer from .... | astigmatism |
| Name the eye defect caused by a cloudy lens or cornea. | cataract |
| What eye defect is caused by too much pressure inside the eyeball? | glaucoma |
| What eye defect is the leading cause of blindness? | glaucoma |
| What type of cone cell is most commonly defective with colorblindness? | red |
| Which sex is more likely to be colorblind ... men or women? | men |
