Blisters inside the eyes are usually caused by vesicular conjunctivitis, conjunctival lymphocysts or blepharospasm. The onset of vesicular conjunctivitis is related to the immune response, the patient in addition to the conjunctiva may appear vesicular bulging, will be accompanied by conjunctival congestion, foreign body sensation and other uncomfortable symptoms, the patient can follow the doctor’s instructions to use hormone eye drops treatment, such as prednisolone acetate eye drops, and so on. Conjunctival lymphocysts are usually formed when lymphatic fluid accumulates in the conjunctival tissues due to obstruction of lymphatic vessels, so that the patient’s eyes may have vesicular swellings. Blepharospasm is the aging factor caused by conjunctival tissue hyperplasia and degeneration caused by the bulge, mostly located in the corner of the eye, the patient may appear in the eye foreign body sensation and other discomforts. It is recommended that patients with blisters in the eye seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.