I think treatments and technology have come along way since your grandmother's diagnosis and my father's diagnosis. I don't think my dad had regular eye check ups and probably didn't get his diagnosis until he was experiencing some vision issues or even vision loss. I don't how he did it. Had he told me I would have done whatever I could to get him the treatments he needed. My mom had already passed by the time my dad was diagnosed. I pray everyday that God allows me to keep my vision and total independence. My biggest fear is having to "depend" on anyone.
I really believe that some people do not take eye health seriously! According to my doctor that's why people with AMD lose their vision.