The night vision glasses that operate with the help of the x-ray technology are referred as the x-ray night vision glasses. The x-rays are just radiation and these x-rays penetrate into the body and view internal regions of the body. They were used for diagnostic purposes. Detection of sources in x-rays does not need light and so, it can be used for night vision technology.
Generally, the objects viewed using night vision glasses are colorless and they can be determined with their sizes and shapes. These glasses are most widely used in hunting and in the shooting. Some doctors use this glasses for diagnosis purposes too.