1. { The Human Eye

2. Parts of the Eye Iris Pupil Cornea Lens Optic nerve Retina

3.  YouTube: Anatomy and function of the eye YouTube: Anatomy and function of the eye YouTube: Anatomy and function of the eye  YouTube: Bill Nye – The Eyeball YouTube: Bill Nye – The Eyeball YouTube: Bill Nye – The Eyeball Videos to watch

4. Seeing F’F’ F object image Retina dodo didi f

5. Focusing on objects F’F’ F object Retina dodo didi f

6. Eye Accommodation F’F’ F object Retina dodo didi f new

7. Rods and Cones YouTube: Khan Academy – Photoreceptors

8. Hyperopia (Far-sightedness) F’F’ F object Retina dodo didi f image

9. Positive Meniscus  a modified form of the converging lens shape.  More cosmetically appealing than a basic convex lens, but it is also thicker in the middle Hyperopia

10. Presbyopia   A form of far-sightedness   eye lens loses its elasticity when people get older   people have a harder time reading small print   can be corrected by glasses Hyperopia

11. Myopia (Near-sightedness) F’F’ F Retina dodo didi f image

12. Negative Meniscus  a modified form of the diverging lens shape.  More cosmetically appealing than a basic concave lens, but it is also thinner in the middle and thicker on the edges Myopia

13.  YouTube: The Eye, Focus and Optical Lens YouTube: The Eye, Focus and Optical Lens YouTube: The Eye, Focus and Optical Lens Correcting sight