What does "Normal cone of light" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
A "normal cone of light" is a term used in medicine, specifically in examining the ear. When a doctor looks into your ear with a special instrument, they can see a small reflection of light off your eardrum. This reflection, which looks like a cone, is called the "normal cone of light". It indicates that your eardrum is healthy and normal.
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