Across
- 4. device use to observe microorganisms
- 8. a thing made or adapted for particular purpose, especially a piece of mechanical or electrical equipment
- 11. Short-sightness can be corrected using _______ lens
- 13. Limitations of sight include ______ illusion and blind spot
- 14. A damaged cochlea can be corrected using a ________ implant but a damaged auditory nerve cannot be corrected using medicine or surgery
Down
- 1. defect of sight that caused by the uneven curvature of the cornea or eye lens
- 2. Defects of sight include short-___________, long-____________ and astigmatism
- 3. devices to oevercome the limitations of sight
- 5. Helps us to listen to the heartbeats
- 6. Astigmatism can be corrected using ________ lenses
- 7. Part of eye which detects light and produces nerve impulses
- 9. can be formed in front or on the retina
- 10. Long-sightness can be corrected using _______ lens
- 12. ______________ amplifies sound so that can be heard from far away