Steve,
So good to hear you've found relief from the eye condition, it's been a long and I'm certain very tough journey for you.
From my experience you've chosen the far better path of retirement; I finally went back home for good at 69 after 5 or 6 failed retirement attempts and truly regret not quitting sooner....... more income is nice but it doesn't trump years of good health to enjoy retirement which you can never get back.
All the best wishes and it's nice to see you back, keep us posted and enjoy the transition.
Cheers,
Lance