At home to measure whether you have myopia, you can observe whether you can see distant objects indistinctly, whether you can read a book or a cell phone more and more closely, and which line of the self-test vision chart you can see clearly. 1. Seeing distant objects is not clear: the general performance of myopia is to see distant objects blurred, pay attention to observe whether the things in the distance have unclear performance. 2. Reading books and looking at cell phones are getting closer and closer: if myopia occurs, the human body will unconsciously visual objects closer and closer to the eyes, pay attention to observe their own daily life in daily life unconsciously will be close to the eyes need to observe things. 3. Self-measurement of eyesight: You can buy a self-measurement of eyesight for home use and test your eyesight at a certain distance. However, whether you have myopia, how much myopia, etc., need to go to a regular medical institution to improve the dilated pupil optometry and other examinations before you can be clear. When myopia is suspected, it is necessary to actively consult a medical doctor for diagnosis and corrective measures.