Anisocoria is a medical condition characterized by unequal pupil sizes in the eyes. This difference can occur in one or both eyes and may be a normal variation or a sign of an underlying issue. It can result from various factors, including injury, neurological disorders, or medications. In many cases, anisocoria is harmless and does not require treatment. However, if it appears suddenly or is accompanied by other symptoms like headache or vision changes, it is important to seek medical attention. A healthcare professional can determine the cause and recommend appropriate care if necessary.