An otoscope is a medical instrument used by healthcare professionals to examine the ears. It consists of a light source and a magnifying lens, allowing doctors to see inside the ear canal and check for issues like infections, wax buildup, or other abnormalities. This tool is essential for diagnosing ear-related problems in both children and adults. When a doctor uses an otoscope, they gently insert the device into the ear while shining a light to illuminate the area. This examination helps in identifying conditions that may require treatment, ensuring that patients like those with ear infections receive the appropriate care.