Blurred eyes after watching cell phones may be related to excessive eye use, corneal conjunctival dryness, pseudomyopia, and so on. 1. Excessive eye use: long time looking at the cell phone screen can lead to excessive eye use, the lens will be over-adjusted, the eye muscles are also in a state of tension, thus appearing after watching the cell phone blurred eyes. 2. Corneal conjunctival dryness: also known as dry eye, will lead to eye secretion of liquid is too little, the eye surface of the tear secretion is too little will lead to tear film instability, tear film instability will lead to blurred vision. 3. Pseudomyopia: also known as accommodative myopia, is caused by spasm of the ciliary muscle that regulates the refraction of the eye and cannot be relaxed. Patients manifest blurred vision, which may be accompanied by eye pain, eye swelling and other symptoms. Symptoms can be aggravated in the case of prolonged viewing of cell phones, reading books and other excessive eye use. Blurred vision after looking at a cell phone can also be seen in other causes, patients can go to the hospital for medical treatment to clarify the cause of the disease for professional treatment. At the same time, patients should pay attention to eye hygiene, keep the eyes clean, avoid rubbing the eyes with hands.