Genetically Inherited Blur-dom (GIB)

I'm a blur person. I hate this. But what's the cause of this Blur-dom?

To find out, I hold my aim towards my parents as they're the greatest suspects because it's most likely inherited.

After years of observations, I conclude that this blur-dom was inherited to me and my elder sister by my mother. (My elder sister has the same problem too)

Once I went to my Grandmother's house (Mother's Mum), and found out another thing.

This blur-dom was actually passed-down from my grandmother!

So I'm the gene carrier, and this gene might be passed down to my children. Haha.