A lot of small blisters on the tail of the eye may be caused by allergic dermatitis, viral dermatitis and other causes, the specific causes are recommended that the patient go to the hospital for examination and clarification. 1. Allergic dermatitis: If the patient is caused by allergy with a lot of small blisters on the tail of the eye, first of all, should be away from allergens, and then you can use saline or boric acid solution for wet compresses, but also the use of glucocorticosteroid drops or eye ointment, or systemic use of antihistamine drugs such as loratadine. 2. Viral dermatitis: the more common viruses that cause small blisters on the tail of the eye are herpes simplex virus and herpes zoster virus. If the patient’s symptoms are caused by viruses, it is recommended that the patient keep the eye area dry to prevent secondary infections, while increasing the body’s resistance. In addition, topical antiviral medications such as acyclovir ophthalmic ointment and ganciclovir eye drops can be used. All of the above medications should be used under the guidance of a professional doctor. When patients find many small blisters on the tail of the eye, it is recommended to seek medical treatment in time to clarify the cause of the disease and then follow the doctor’s instructions for treatment.