The mirror is angled and the surgeon uses a mirror or light fixed to their head to direct light into your throat, to get a good look at the larynx.
(The mirror; is angled; ) (the surgeon; uses; a mirror or light fixed to their head; into your throat) (a mirror or light; fixed; )
The mirror the surgeon a mirror or light
is angled uses fixed
a mirror or light fixed to their head into your throat