Why did David Bowie have 2 different colored eyes?

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Tags

1. #respond
2. #pupil
3. #right
4. #while
5. #changes
6. #dilated
7. #instead
8. #called
9. #appearance
10. #bowie
11. #illusion
12. #permanently
13. #condition
14. #fixed
15. #unusual
16. #coloured
17. #anisocoria
18. #different
19. #having
20. #because
21. #create
22. #light