What is myopia?
Myopia is a common vision problem where someone can only focus on objects that are close to them. This is why it is called being nearsighted. Myopia is not an eye disease; it is an optical error that prevents a person’s eye from focusing in certain ways.
What is happening is that your lens brings the light entering your eye into focus before it reaches the retina. This is usually because your eyeball is slightly too long, rather than a misshapen lens itself. In ideal vision, the focal length of your eye is the same length as the eyeball. In myopia neither lens nor eyeball is ‘broken’, they’re just not working together as a matched set.