Eye pain is a problem that almost everyone experiences, some due to eye trauma, some due to eye disease, and some due to lifestyle and eye habits. There are many diseases that cause eye pain, such as acute angle-closure glaucoma, iridocyclitis, conjunctivitis, corneal foreign bodies, lid cysts, mydriasis, keratitis, and supraorbital neuritis. Traumatic diseases that cause ocular pain include blunt contusion of the eye, penetrating eye injury, and rupture injury of the eye. Some eye pains are related to life and eye habits, such as working too long at close range with the eyes, not resting and sleeping well, staying up late, eating spicy and irritating foods, smoking and drinking often, etc. Eye pains can occur. In addition, there is another condition that can cause eye pain, that is, diseases in other parts of the body secondary to rhinitis, sinusitis, cervical spondylosis, etc. can cause eye pain. People with refractive errors, such as myopia, hyperopia and astigmatism, can also experience eye pain if they have not corrected their refractive errors, especially if they have astigmatism. To sum up, the main causes of eye pain are trauma, organic lesions of the eye itself, diseases in other parts of the body, and eye use and lifestyle habits.