Myopia Is Not A Genetic Illness.
If you are serious about your eyesight, you will want to look into the biology of vision, and the science behind myopia. And while there are thousands of studies worth reading, I link two here to start with. These are two PDFs here which reference several hundred ophthalmology studies, PhD opinions, and many years of research.
Start With These Studies.
The two PDF links below do a good job summarizing the current state of myopia science. Well referenced and providing a big picture perspective, these PhD scientists will help you understand what is known about myopia.