I turn 44 tomorrow so I'm a spring chicken compared to you but I know how you feel ;). Thankfully I still don't have back pain...most of the time. My eyesight is still pretty good but I have noticed that I'm having to hold things a little further away to read them. Phone of choice? Galaxy Note 9. I'm not sure they make a bigger phone screen... I do wake up early for no reason but that's relatively late compared to you at about 830am and usually my youngest is waking up by then anyway. I have to get up about an hour earlier on work days.
Enjoy every second of your back-pain-free life!
Luckily I'm mostly kidding about all of this. I know I'm pretty damn lucky.