Genetic disease that runs in my family

I am not sure if having really bad eye vision is a genetic disease. Everyone in my family has bad vision. My uncle, he doesn't even have a computer or television at his house and his is extremely near sided. All of my uncles, aunt and even my dad needs to wear glasses, all of them have different profession so doing a job that is vision intensive is not a variable of why all of us need to have glasses. One of my uncle is a ship builder, another one is a bus driver and another one is an IT specialist. even my half brother's son has glasses. Since some of my relatives are born with our eyes a little bit near sided .