I am myopic without genetic predisposition

[Creaticia]

Is it really possible?
There is no myopic in my family, and according to some of my SNP I would be protected from myopia

Outside, since I was 14 I have been myopic. Is it possible that some of my behavior could have fully influenced the appearance of my myopia?

[Anatolya]

Myopia is one of the traits that may result from adaptation, and unlike you, those who are genetically prone to have myopia may never develop it depending on their visual habits so it's quite possible for you to have it as an adaptive trait

[Demirkazık]

The development of your skull may also contribute to myopia.