Why did David Bowie have two different eyes?

Related questions

1. Why did Draco's mother help Harry?
2. Was Severus Snape Harry's father?
3. What happened to David Bowie's pupil?
4. What did Snape die from in real life?
5. Is Snape Harry's father?
6. Who did David Bowie leave his estate to?
7. Why did Snape love Lily so much?
8. Did David Bowie marry Grace Jones?
9. Why does David Bowie have 2 different colored eyes?
10. Is Zowie Bowie David Bowie's son?

Tags

1. #blackness
2. #often
3. #looked
4. #different
5. #compared
6. #unusual
7. #dilated
8. #quite
9. #instead
10. #pupil
11. #anisocoria
12. #right
13. #appeared
14. #condition
15. #called
16. #appearance
17. #bowie