Defects of vision and their correction

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• 8 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. The sense organs
2. The structure of the eye
3. Image formation in the eye
4. Defects of vision and their correction
5. The structure of the ear
6. Hearing
7. The ear and balance
8. Common ear disorders
9. The endocrine system
10. The pituitary gland
11. The thyroid gland
12. The adrenal glands
13. The pancreas and blood sugar
14. The gonads
15. Over and under secretion of adrenaline
16. Over and under secretion of thyroxine
17. How hormones act
18. The nervous and endocrine systems compared
19. Sense organs and safety
20. Hormones, homeostasis and review