Across
- 3. focuses light to form an image
- 4. the colored part of your eye
- 6. an opening in the iris
- 7. highly contagious infection of the tissues on the outside of the eye
- 8. infection of an oil gland in the eyelid
- 10. light travels through it
Down
- 1. units used to measure the loudness of sound
- 2. when the cornea or lens has an irregular shape
- 5. sends electrical signals to the brain
- 9. receives an image and produces electrical signals