What's wrong with LED lights?

Related questions

1. Should I wire LEDs in series or parallel?
2. What are the advantages of LED?
3. Is anode positive or negative?
4. Are led and lead interchangeable?
5. Does RGB make white?
6. How do you connect LED lights?
7. What is RGB LED strip?
8. Do 12v LEDs need resistors?
9. Why do you need a resistor with an LED?
10. What is RGB color format?

Tags

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2. #damage
3. #retina
4. #according
5. #energy
6. #criticized
7. #bulbs
8. #human
9. #fluorescent
10. #discovered
11. #study
12. #first
13. #cause
14. #research
15. #light
16. #exposure
17. #friendly
18. #dangerous
19. #irreparable
20. #lights