During this procedure, a small telescope will be passed into your nose to examine the nose, throat and voicebox.
A fibreoptic nasendoscopy is the official term for this, this is passing a small (less than 3mm wide) telescope into your nose to look at the nose, throat and voicebox.
There may be the option to take photos or to see the images yourself on a video screen if you wish.
This procedure lets the doctor see what is going on in your throat and your voicebox, and possibly how you are using your voice.
This is an important and very useful investigation. It may be the only investigation that you need, or it may suggest that you need further tests.