There are more causes of left eye pain, such as visual fatigue, eye infection, glaucoma, eye trauma, etc. Patients can relieve eye discomfort through general treatment, medication and surgery. 1. Visual fatigue: If patients use electronic products such as cell phones for a long time in close proximity and experience visual fatigue, patients may experience discomfort such as soreness, dryness and pain in the eyes, and patients can rest their eyes to alleviate eye discomfort. 2. Eye infections: eye infections such as granuloma, bacterial blepharitis, etc., under the stimulation of inflammation, the patient may appear eye redness, swelling, pain and other discomfort, the patient can follow the doctor’s instructions to use medication, such as tobramycin eye drops, etc., to control inflammation, relieve eye discomfort. 3. Glaucoma: Glaucoma patients because of elevated intraocular pressure, eye swelling and pain, vision loss and other symptoms, patients can be under the guidance of the doctor to apply mannitol, brinzolamide eye drops and other intraocular pressure-lowering medication, to alleviate the discomfort of the eye. If the effect of drug treatment is not good, the feasibility of surgical treatment, such as trabeculectomy. 4. Eye trauma: eye trauma patients can also appear eye pain, patients early feasible eye cold compress treatment, relieve eye discomfort. If there is a skin laceration, the patient can be treated with surgical suturing. It is recommended that patients with significant eye pain consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment.