What is the hole in the center of the iris?

Related questions

1. What is the top layer of the eye called?
2. What is the correct pathway of light through the eye?
3. What is the black portion of the eye called?
4. Does cornea protect eye?
5. What are the 3 layers of the eye?
6. How can I treat blurred vision naturally?
7. How do the eye and brain work together to process what we see?
8. How does light travel through the retina?
9. Why is the human eye important?
10. What does eye pupil mean?

Tags

1. #called
2. #circular
3. #choroid
4. #colored
5. #pupil
6. #center
7. #front
8. #opening