Nafamivir eye drops are commonly used in ophthalmology to treat allergic conjunctivitis and reduce conjunctival congestion in the eye. 2. It is caused by the low temperature of the medication and the stimulation of the eye surface, some patients like to keep the medication in the refrigerator freezer, which leads to the low temperature of the eye drops and the stimulation of the cornea, causing stinging pain, usually lasting for a short time, about 10 seconds. 3. The eye stinging pain will occur immediately after the occurrence of the abrasion. When ordering the medicine, pay attention to the mouth of the bottle to be about 3-5 cm away from the eye, so that the situation of abrasion of the cornea will not occur easily.