There are more causes of eye pain, which can be judged based on past medical history, and may be caused by glaucoma, ocular trauma, scleritis and other diseases. 1. Glaucoma: If the patient has glaucoma, eyeball pain may occur when the intraocular pressure rises sharply, and headache, nausea, vision loss and other uncomfortable symptoms may also occur. 2. Trauma: If acid or alkali chemicals enter into the eyeball or corneal contusion, the patient may show severe pain in the eyeball, accompanied by varying degrees of photophobia, tearing and other discomforts. 3. Scleritis: Scleritis patients also appear eyeball pain and other discomfort symptoms, the patient’s eye movement pain aggravated, the patient may appear diplopia, eye movement restriction and other discomforts. It is recommended that patients with significant eye pain should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.