Dry eye does not usually cause blindness, but severe dry eye can seriously affect vision and must be taken seriously. Dry eye, also known as corneoconjunctival dryness, is a condition in which the quality or quantity of tears is abnormal for various reasons, causing ocular surface lesions and eye discomfort. Its common symptoms include visual fatigue, dry eyes, itchy eyes, foreign body sensation, burning sensation, fear of wind, photophobia, etc. Patients with severe dry eye will have red and congested eyes and dry corneal spots, which can significantly affect vision. Mild dry eye does not cause blindness, but if patients do not take timely treatment and develop severe dry eye, it can lead to significant loss of vision. Therefore, patients can follow medical advice to protect their eyes with medications such as sodium glassate drops and polyvinyl alcohol drops if necessary. In conclusion, patients with dry eye disease are recommended to go to the ophthalmology department of a regular hospital in a timely manner to get a clear diagnosis from a professional doctor and then undergo symptomatic treatment. In daily life, attention should be paid to maintaining good eye habits and avoiding prolonged eye use.