Microscope belongs to the active medical device why?

Belongs, active medical devices are medical devices that rely on electricity or other energy sources rather than energy generated directly by the human body or gravity to perform their functions, so microscopes belong to active medical devices.

Medical microscope is composed of a combination of one or more lenses can be the naked eye can not distinguish cells, viruses, and other tiny substances magnified into the naked eye discernible object image of an optical instrument. According to different imaging principles can be divided into optical microscope and electron microscope.