When itching and swelling occur in the eyes from bug bites, you can use cold towels to apply cold compresses, or use tobramycin dexamethasone ophthalmic ointment, flomilon eye drops and other medications for treatment. After the eyes are bitten by bugs, the toxins in the bugs enter the eyelid tissue, which may lead to local skin allergic reaction and toxic reaction, thus causing the patient’s eyes to be red, swollen, itchy, painful and other uncomfortable feelings. Patients can use cold towels to apply cold compresses to the local skin to relieve the swelling of the eyes. Patients need to be careful not to scratch or rub the local skin, so as not to aggravate the symptoms. Anti-allergic drugs can be used as prescribed by the doctor, such as tobramycin dexamethasone eye ointment, flomilon eye drops, azelastine hydrochloride eye drops and so on. Patients with severe symptoms can be treated with medications such as loratadine tablets. Patients whose eyes are itchy and swollen from bug bites need to follow the doctor’s instructions to use medication, not self-medication.