There are many kinds of eye diseases, such as cataract, dry eye, glaucoma, bacterial keratitis, etc. The symptoms are different, so if you cannot identify what eye disease it is, you need to go to the hospital in time. 1. Cataract: It is a visual disorder caused by clouding of the lens, with a delayed onset, and the main symptoms are blurred vision, haziness in front of the eyes, and may be accompanied by monocular diplopia and visual field defects. The main symptoms are blurred vision, haziness in front of the eyes, monocular diplopia and visual field defects. When the disease is serious, vision can be reduced to light perception or blindness, requiring timely surgical treatment; 2, dry eye: usually due to insufficient tear secretion, evaporation or tear composition abnormalities, thus causing eye discomfort, patients can appear eye fatigue, throat foreign body sensation, dry eyes and other symptoms, a few patients may also be accompanied by photophobia, eye pain, eye redness and other symptoms. Early stage may mildly affect vision, but if left untreated and allowed to progress, serious corneal damage can occur; 3, glaucoma: can be divided into primary open-angle glaucoma, primary closed-angle glaucoma, secondary glaucoma, childhood glaucoma, etc., different types show different symptoms. For example, primary open-angle glaucoma has almost no symptoms in the early stage, but as the disease progresses, patients may develop blurred vision, eye swelling and headache. Primary closed-angle glaucoma may show slight eye distention, headache, nausea and other discomforts during the acute phase. If timely treatment is not carried out and the disease enters the chronic progression phase, the visual field may gradually shrink, which may lead to blindness in severe cases; 4. Bacterial keratitis: bacterial keratitis is a purulent keratitis caused by bacterial infection, and the common causative agents include staphylococcus, streptococcus and pseudomonas. Patients may present with ocular redness, pain, photophobia, and decreased visual acuity. The diagnosis can be clarified by lesion scraping, and antibiotic eye drops can be selected for treatment. In summary, eye diseases are more, in the daily should pay attention to eye hygiene, can effectively control the occurrence of eye diseases, eye dryness try not to rub the eyes with your hands, should be flushed with water; stare at the computer screen for a long time, stop eyes to look into the distance every now and then, can relieve eye fatigue.