How Much Do You Really Know About Sunglasses And Ultraviolet Light?

1. Sunglasses that block 100 percent of UVA and UVB light rays are much more expensive than other sunglasses.

true

false

2. Children don't need to wear sunglasses, because their eyes are better able to withstand ultraviolet rays and glare than adult eyes are.

true

false

3. Overexposure to ultraviolet light can cause growths on the eye called pingueculae and pterygia.

true

false

4. Cataracts and age-related macular degeneration may be caused, at least in part, by too much ultraviolet light exposure.

true

false

5. If you are a mountain dweller, you will likely be exposed to higher UV levels than if you live in the lowlands.

true

false

6. There is no reason to wear sunglasses on a cloudy day.

true

false

7. Sunglass lenses with dark tints are more protective against ultraviolet rays than those with light tints.

true

false

8. High-energy visible (HEV) light — also called blue light — is a kind of ultraviolet radiation.

true

false

9. Only people with light-colored eyes need sunglasses; people with dark-colored eyes are naturally protected because they have more pigment in their eyes.

true

false

10. Brown-tinted sunglass lenses are best for letting you see colors as they really are.

true

false

11. If you're wearing high-quality sunglasses, it's OK to gaze at the sun.

true

false

12. Anti-reflective coating often is applied to the back surface of sunglass lenses to reduce glare caused by light reflecting into your eyes when the sun is behind you.

true

false

13. The UV Index is a 10-point scale that sunscreen lotion manufacturers devised in the 1970s to encourage people to buy their product.

true

false

14. The lowest risk level on the UV Index is indicated on UV maps with the color green.

true

false

15. If you wear contact lenses with a UV blocker, you still need to wear sunglasses.

true

false

16. Certain medications can increase your body's sensitivity to UV and HEV radiation.

true

false