Fiberoptic endoscopic evaluation of swallowing (also called FEES) is a procedure that helps your doctor assess how well you swallow. Fiberoptic endoscopic swallow evaluation is typically done if you're experiencing coughing while eating, a sensation of food getting stuck, unexplained voice changes, or if you're at risk of aspiration (food or liquid going into your airway). During this test, a thin, flexible camera is passed through your nose to look at your throat and vocal cords while you swallow different types of food and liquids. The entire exam is recorded and reviewed in detail.

This procedure is done right in the office and takes about 15–20 minutes. A numbing spray may be used in the nose to reduce discomfort, but most people tolerate the test very well. You'll be seated upright and asked to swallow liquids, puree, and solid foods dyed with food coloring so the swallowing process can be clearly visualized. You can speak and breathe normally during the test. No recovery time is needed — you can return to normal activities immediately. Occasionally, patients may feel mild nasal irritation or sneeze briefly afterward. It is a very safe, low-risk procedure and an excellent tool for diagnosing swallowing issues and guiding therapy.