1. Lenses There are two types: Concave Lenses
Make light rays diverge (get further and further away from one another)
Image is larger than the original
2) Biconvex lenses
Make light rays converge (get closer and closer together)
Image is smaller than the original

2. The Biconvex Lens In Our Eye
The shape of the lens in the eye is called a biconvex lens.
This type of lens makes light rays converge (come closer together) and inverts them.

3. The Biconvex Lens In Our Eye
The images we see in our every day lives are inverted by the biconvex lens and projected onto the retina.
Thankfully the brain registers these inverted images as if they were right-side up.

4. Eye Problems & Corrections
Myopia Hypermetropia (near-sightedness) (far-sightedness) See Eye Problems Worksheet

5. Try This! Name 2 types of lenses. Draw out how they function.
What is myopia? Hypermetropia?
What is the function of lacrimal glands?
What is the function of the conjunctiva?