It is common that when we were in school, did we ever have difficulty seeing what the teacher wrote on the blackboard? Maybe we could read a book easily, but things that were far away, such as road signs were blurred, so, having blurred distance vision is the main symptom of myopia, a disease that affects millions of people in the world.
Myopia usually first occurs in childhood, in most cases, by adulthood a person's nearsightedness has stabilized, however, some people may have nearsightedness that continues to worsen with age.
Image hosted in: Pixabay Image captured with a Sony Ilce-7m2 camera. Image type JPG, Resolution 6000×4000.