Hey, I live in north america and my parents are in middle east. I have visited them once in pas 3 years and not planning to pay a trip in the next year or 2.
I try to have a connection once a day (via some IM platforms) and Skype once or twice a week.
Since they are in a good position both medically and financially, I just try to make sure they are not worried about me and have enough information about what is going on in my life and vice versa.