Nine-year-old children who are not allergic to Naphthamivir Eye Drops can usually use them, but only under the supervision of a physician. Nafamivir Eye Drops is a compound preparation with components such as naphazoline hydrochloride, chlorpheniramine maleate, and vitamin B12, which is indicated for the relief of symptoms such as eye fatigue, conjunctival congestion, and itchy eyes. Because the use of this product in children may occur central nervous system inhibition, resulting in coma and a significant drop in body temperature, etc., it can be used by children aged 9 years, but must be used under the supervision of a physician. Other adverse reactions of this product include pupil dilatation, increased congestion, blurred vision and mild inflammation and other ocular discomfort, and may also occur dizziness, headache, drowsiness, nausea and other systemic adverse reactions, patients with closed-angle glaucoma or those who are allergic to the drug should be contraindicated. Specifically need to consult a doctor, under the guidance of the doctor to use correctly, not blindly self-medication for children.