A rhinoscope allows for a detailed assessment of the mucous membrane and the presence of pathological processes in virtually any part of the nasal cavity, including areas inaccessible during a traditional examination. Rhinoscopes are used to examine the nasal cavity and nasopharynx. The advantages of endoscopic examination with a rhinoscope include its informative nature, safety, and the ability to document examination results (photo and video recording). A rhinoscope is a rigid endoscope. The rhinoscope is the first link in the image transmission chain. Generally, a rhinoscope consists of outer and inner tubes, between which an optical fiber is laid to transmit light from the illuminator into the body cavity. The inner tube contains an optical system of miniature lenses and rods. The rhinoscope's optical system consists of: - a wide-angle objective; - several image transfer sections; - an eyepiece. The rhinoscope's wide-angle objective creates an image in its focal plane, which is then transferred by the transfer sections to the focal plane of the eyepiece. In general, different types of rhinoscopes differ in diameter, entrance angle of the visual field, direction of the visual field, and working length. Rhinoscope diameters can range from 4 mm to 2.7 mm. The entrance angle of view is the angle within which the rhinoscope transmits the input image. The visual axis direction is 0°, 30°, and 70°. If the visual axis is 0°, the rhinoscope is called a straight or oblique rhinoscope. Otherwise, the rhinoscope is called an oblique rhinoscope; this optic is more functional and convenient for working with two-dimensional images. In endoscopic surgery, optics with a 30° angle are most common. For more information on prices and types of rhinoscopes and otoscopes, please refer to the Catalog in the Rhinoscopy / Rhinoscopy section.