for some insight into your situation. I would never have suspected that you had problems with your vision. For you to face the vision problem with your degree of optimism is a win win for you. If you ever do lose it all, you'll at least have your models as proof of evidence for your braggin' rights.
I'm sincerely sorry for your loss. My little mom suffered a very slow and declining condition. Her slow death from Parkinson's lasted for nearly 7 years. She left 71 weeks and 4 days ago at the age of 88. She out-lived dad 40 years..... he's the one that died at Christmas here. I think of them e v e r y day so I'm still climbing outta the pits too.
Her departure caught me right after a stage of modelers burnout. Then, about three years after THAT, my left eye became something to look at, not to look with. Every thing I do is with 
one eye only and 2.25 readers. The loss of multiple functions in that eye 37 years ago was the result of a brain tumor (when I was 27) the size of a tennis ball, which also affected the nerve responses on the left side of my face. It took out my hearing on that side as well....... so at least I still have my face.
And no, that's not why I sometimes act 
looney on the forum here.
I'm just having some harmless fun with the goofiness and hope that others may get a laugh, even if it's at my expense (however, I do sometimes think they took out the brain and left the tumor on purpose - probably about the same size anyway).
Otherwise, I'm lucky to be doing fine. There are not a lot of guys my age that have endured a brain tumor and can squat (free weight) 275-315 lbs for triple sets of ten .......(not braggin' - just explaining). 
I'm very thankful for that ability and will continue with it until I am also finished here too.
Having a great son is a great asset also. I took over when he was 11 mths old when his mom left. He's now 26 years old with a Masters degree and a 4.0 GPA at UNCG. Every time I talk with him, my respect for this young fella just continues to upgrade. This is another source of good fate for me after all the clutter in my world and confirms your comparative that, "storms never last".
Well at least my problems aren't as tragic as the future you may well have to endure. I sure hope that maybe what I've written here can be a source of inspiration for you. It never matters how bad things may be, but there is always someone in worse shape.
I wish you the best and believe
that the future curve of technology
will bring you a positive resolution.
Your comment on my modeling ability is most humbly appreciated.
I Thank You,
Steve