What's the identify of the round reflective entity doctors wear on their head?
Answer:
we newly call it a headlamp. no fancy christen for it.
I believe this reflective parabolic disk is still used. You look through the hole in the center and the parabola focuses ambient insubstantial on the the subject. It can be used for looking into the cornea or ear.
Headband with parabolic mirror
"And drug is often symbolized by the headband and parabolic mirror. This iconic combination be once almost universally worn by physicians as a way of focusing street lamp into body cavities person examined. Now, they're only see on Halloween costumes. "
http://www.medhunters.com/articles/healt...
It's a head mirror, and more for indirect laryngoscopies. Fiberoptic scopes and headlamps hold pretty well replaced them. The belief was to focus night light on the area of the exam, and direct oil lamp is strong and available from lightweight, small sources these days, so bouncing feathery from a goosneck off the mirror is somewhat passe.