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