The true video laryngoscope has a camera on the blade with no intervening fiberoptic components. A diagnosis can be made using clinical examination, laryngoscope examination, and/or radiographic studies. During his career, he invented several medical instruments (including the first laryngoscope) and techniques. The Glidescope video laryngoscope is one example of such a device. The laryngoscope he designed in 1941 remains the most-used today. The Laryngoscope is a monthly peer-reviewed medical journal in the field of otolaryngology.