My heart goes out to you. Words cannot describe all you have gone through: your health, your parents' health, the shocking discoveries about their not being able to get all their meds. , the fact that your dad had only one kidney, the escalating problems that led to his passing away. I cannot send pictures of angels because I don't have them but I am glad that someone has so many to share!
I can only add my tears
and a hug
and add that people may die but love does not. In the end, it is that same love that makes you miss them and cry that will console you and point you in a new direction.
Hope your eyes will continue to improve along with your health.