Conjunctival bulging in patients refers to conjunctival edema or hyperplasia, which may be caused by blepharospasm, vesicular conjunctivitis, and conjunctival microcysts. 1. Blepharospasm: Blepharospasm can occur at the corneal limbus, which is a hyperplasia of the conjunctival tissue, manifested as a triangular or oval elevated gray-yellow nodule, most commonly seen in outdoor workers, and related to ultraviolet rays, wind and sunlight and other factors. 2. Vesicular conjunctivitis: vesicular conjunctivitis belongs to immune conjunctivitis, patients may appear conjunctival bulge in the form of small vesicles. 3. Conjunctival cysts: Conjunctival cysts may be caused by lymphatic obstruction due to chronic conjunctivitis, which can lead to conjunctival bulges, and if the size of the conjunctival cyst is large, the patient may experience a foreign body sensation in the eye. It is recommended that patients with conjunctival bulges consult a regular hospital in a timely manner to assess their condition and follow the doctor’s instructions for treatment.