First of all, laryngoscope #0 and laryngoscope #1 have different diameters. Usually, #0 laryngeal lenses have a smaller diameter of about 7mm or so, which is suitable for children and smaller esophagus. Whereas, #1 laryngoscope lenses have a larger diameter, usually around 10mm, and are suitable for adults and larger esophagus.
Secondly, they differ in their range of use. Because the #0 laryngeal lens is smaller, it can more easily access the narrow larynx and examine deeper areas, such as the vocal cords and the base of the throat. The #1 laryngeal lens, on the other hand, is more suitable for general laryngeal examination due to its larger diameter.
In addition, the choice of laryngoscope #0 or laryngoscope #1 may vary depending on the particular condition and the judgment of the doctor. In some cases, it may be necessary to use a smaller #0 laryngeal lens to minimize patient discomfort or to choose a more appropriate laryngeal lens for a specific condition.
In summary, there is a difference in diameter and range of use between #0 and #1 lenses. The decision of which lenses to use should be based on the patient's age, physical condition, and specific medical condition, and is best left to the professional judgment and advice of a physician.