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After reading each question below, click on the “pop-up” box after the question to activate it. Then click on the answer you think is correct. If you want to change an answer, click on that box again and select another choice.
If you are not sure of an answer, use a Search Engine to attempt to find the answer on the world wide web, or else at my eye site, Anatomy, Pathology & Physiology of the Human Eye. Then return back here and select your answer.
When you are done, click on the “Score Quiz” button at the bottom of the “Summary of Answers” section. This will show you how many you got correct!
| 1. What visual acuity is better than 20/20? | |
| 2. When shining a light into the pupil of a (normal) eye, the pupil of the other (normal) eye should do what (compared to the pupil into which the light is being shined)? | |
| 3. What is another name for “nearsightedness”? | |
| 4. What is the most common refractive error of the human eye? | |
| 5. The adjustment in shape of the eye’s crystalline lens, enabling the eye to focus at various distances, is known as what? | |
| 6. A normal adult human eyeball is about how big, compared to the size of a standard ping pong ball? | |
| 7. Light from an object enters the eye through the pupil (hole in the iris) and travels to the back of the eye, forming an image on the retina. What is the orientation (direction) of the retinal image, as compared to that of the original object? | |
| 8. The ring forming the junction between the cornea (front clear part of the eye) and the sclera (white part of the eye) is called what? | |
| 9. What is the world’s leading preventable cause of blindness? | |
| 10. If a person looks upward and to her left, she is using primarily what extraocular muscles for her right eye and left eye? |
If there is any blank space under “Your Answers,” it means that you did not answer that question. You can go back and make any changes in your answers before you click on the “Score Quiz” button, which will cause the right responses to appear under “Correct Answers.”
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