Across
- 4. turn not upside down
- 5. turn the light in to electrical signal
- 6. in pupil- the light goes to the pupil
- 7. nerve- caries signal to the brain
- 9. works by the pupil,lens,iris,brain
Down
- 1. be hide the pupil and the iris
- 2. signal- go to the brain
- 3. control light
- 4. add details
- 8. take in light