Glad your meds are working pretty much...
They used to sell a sticky dot of paper for putting on shooting glasses with a hole in it, like a huge peep sight. No idea if they are still available, but you could work with those dots they sell in paper supply places and drug stores and...
You show considerable wisdom. When you look hard, all sights are based on geometric relationships allowing light/sight picture thru. In strong light, the finer sights can be useful, but for speed and lesser light conditions, the sights with alot more light coming thru--wider spaces are much more useful/accurate.
On rifles for dangerous game they call this sort of huge "peep" a "ghost ring." Jack O'Connor wrote of taking the finer rifles that came with peeps, unscrewing the disk with the tiny hole and putting it in a drawer and just using the outer ring as his sight... luck.