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Home » Services » In Office Procedures » Stroboscopy


Stroboscopy is a procedure used to examine the function of the vocal cords. The vocal cords are thin bands of muscular tissue that vibrate at a very fast rate while producing sound, making it difficult to examine them under normal light. Stroboscopy uses a special light called a strobe light which sends intermittent light pulses at a frequency that makes it easier to visualize vocal cord movement.

The strobe light is attached to a tube which is connected to a camera and inserted through the nose or mouth. Your doctor looks through the tube to examine your larynx or vocal cords as you make certain sounds. The camera records vocal cord movement which is later analyzed.

Stroboscopy helps evaluate the reason for hoarseness or other voice abnormalities. Vocal cords may be irritated and swollen due to overuse or acid reflux. There may be growths, scar tissue, lesions or abnormal muscle tension. Vocal cord movement and closure are carefully studied. Stroboscopy can also evaluate problems with swallowing.

For the procedure, you will receive an anesthetic spray to numb your throat. This will make you more comfortable and reduce your gag reflex. Your doctor will carefully examine your vocal cords under the strobe light as you perform different vocal tasks such as pronouncing vowels or singing. The entire procedure takes about 15 minutes and is generally safe.

  • American Academy of Otolaryngology
  • Facial Plastic and Reconstructive Surgery
  • American Osteopathic Association