This Old Tech: How the Otoscope Helped Doctors See How You Hear

The human ear is one of the most sophisticated and sensitive pieces of the body, with numerous parts working in tandem to make it possible for us to hear.
But getting a full understanding of our auditory functions required a device not only small enough to fit inside the ear canal, but one that also made it possible to see what was happening inside clearly. That device, in its modern form, is the otoscope, or ear speculum, a handheld machine that combines a light source, a lens and a funnel-shaped tip.
Its history commonly associated with the nasal cavity as well, the otoscope is a key item…