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The eye

3 lessons in Homeostasis and response.

18 exam questions · 41 marks

5.7 Structure of the eye The parts of the eye and their jobs: cornea, iris, pupil, lens, ciliary muscles, suspensory ligaments, retina (rods and cones), sclera and optic nerve, plus the iris reflex. Separate only AQA Edexcel OCR 5.8 Accommodation: focusing near and far How the ciliary muscles and suspensory ligaments change the shape of the lens so the eye can focus on near and distant objects. Separate only AQA Edexcel OCR 5.9 Defects of the eye Short sight, long sight, cataracts and colour blindness: what causes them, ray diagrams, and how glasses, contact lenses, laser surgery and lens replacement correct them. Separate only AQA Edexcel OCR