There are various causes of eye pain: First, the most common cause is visual fatigue, due to refractive error and not wearing the right glasses, after using the eyes excessively there will be eye swelling and pain, eye congestion, tearing, etc., need to wear the right glasses, you can point is Tulun eye drops, twice a day to relieve visual fatigue. Second, dry eye, is caused by the quality and quantity of tears abnormal, can appear dry eyes, pain and other symptoms, you can point sodium vitreous eye drops, four times a day, to relieve eye discomfort symptoms. Third, glaucoma, glaucoma is due to pathological eye pressure increase, eventually leading to visual impairment of the disease, can appear eye pain and ipsilateral migraine, sudden loss of vision, etc. Fourth, neuropathic eye pain, due to poor rest, or have a cold, sinusitis, etc. can appear eye pain.