An otoscope or auriscope is a medical device which is used to look into the ears. Health care providers use otoscopes to screen for illness during regular check-ups and also to investigate ear symptoms.An otoscope potentially gives a view of the ear canal and tympanic membrane or eardrum.Since the eardrum is the border separating the external ear canal from the middle ear, its characteristics can be indicative of various diseases of the middle ear space.n otoscope potentially gives a view of the ear canal and tympanic membrane or eardrum. Since the eardrum is the border separating the external ear canal from the middle ear, its characteristics can be indicative of various diseases of the middle ear space.