When I saw him squinting, I realized he may have run into a twig or the kitty may have given him a swat, catching his eye. My greatest fear was a more serious problem so I just said a little prayer and when I greeting him this morning it was a bit gunky and I had to clean it three times but he's not squinting anymore and looks good now. WHEW! Thank you, Lord.
The pupil pretty much fills the whole iris area but whatever irritant got in his eye caused the pupil to shrink down to a small dot. Strange. It's now back to 'normal', which isn't normal at all but normal for his condition, LOL. I'm quite relieved.