Common causes of itchy eyes with blisters after rubbing include blepharitis, allergic conjunctivitis, and conjunctival cysts. 1. Blepharitis: Patients with blepharitis may experience redness and swelling of the eyelids, increased eye secretions, itchiness and other discomforts, and after rubbing the eyes with the hands, patients may experience eyelid abscesses, which may also be accompanied by eyelid pain. 2. Allergic conjunctivitis: If allergic patients are exposed to allergens, such as airborne dust, cosmetics, fur, lint, etc., it can lead to itchy eyes, accompanied by filamentous secretion, conjunctival edema and other symptoms. 3. Conjunctival cysts: Blockage of the lymphatic vessels in the conjunctiva can lead to the accumulation of lymph to form cysts, which can also be caused by infection, trauma and other reasons. If the patient rubs the eyes with his hands, it can lead to an increase in the size of the cyst. Patients with itchy eyes and blisters are advised to seek medical attention to evaluate their condition and follow the doctor’s instructions for treatment.