You can't see the mobile phone clearly at 30 cm. How many degrees is myopia?

300 degrees. According to the query of 39 Health Network, when you are 30 cm away from your mobile phone, you have found the symptoms of blurred vision, which belongs to the range of moderate myopia of 300 degrees, so you can't see your mobile phone clearly at 30 cm, which is 300 degrees myopia. Myopia means that in a relaxed state, parallel light passes through the refractive system of the eyeball and focuses on the retina. This disease often happens to writers or other close-range workers.