A thin, flexible tube with a camera at the end is used to look at the back of your mouth, nose, pharynx and larynx.
Your doctor uses a thin, flexible tube called a nasendoscope. They pass it into your nose, over the back of your tongue and down into the upper part of your throat. You might find this a bit uncomfortable but it only takes about a minute. The tube has a camera and a light at the end to help the doctor get a better view of the back of your mouth and throat.
Before the test, your doctor may numb your throat with an anaesthetic spray. Some people prefer to have the test
If you have the spray don't eat or drink anything for about an hour after the test, or until the numbness wears off. This avoids the risk of food and drink going down the wrong way into your lungs when you swallow. It also means you avoid burning your mouth or throat with hot food or drinks.