Many diseases can cause eye discomfort, such as eyelid disease, ocular surface disease, lacrimal disease, conjunctival disease, corneal disease, glaucoma, cataract, vitreous disease, retinal disease, uveal disease, refractive error, amblyopia, strabismus, ocular trauma, etc. Each disease can be divided into many types depending on the cause. Therefore, once eye discomfort occurs, you need to go to the ophthalmology department as soon as possible to clarify the specific cause before giving symptomatic treatment. In addition, you need to pay attention to reasonable eye habits, such as trying to increase the time spent outdoors, reading books, television, computers, cell phones, etc. do not exceed half an hour, the farther away the better to read, the best distance to watch television five meters away, sitting posture must be correct, try not to lie down to read, and do not read in a rocking car, only in this way can best protect the eyes.