Always wear a shirt w/ a pocket to drop those sunglasses in or get one of those glasses cords you can wear around your neck & you’ll always have those sunglasses w/ you when you need them. 
Seriously, I’m really sorry you have the photophobia symptom. Very tough when you work outside!! I hope it disappears as quickly as it came on. 
Amazing how inflammation can overtake out brains. I suffer this, too. As I do what I can to help the inflammation (I like to think it’s sort of blocked toxic lymph that I can help my body get rid of), my thoughts usually improve. Meanwhile I take advantage of meditation and a sort “Tummy breathing” per a physical therapist. And prayer. I have to take a few medicines, too. Then I can think more like your name.
Yes, day by day gets us through. Thinking of you. Hope you can tame some of the inflammation.