I hear you guys, I genuinely truly do, but on my very high res monitor the original RAW image (which I cropped to about 4600 x 3000, which is then compressed to quite a bit smaller for this forum) shows the eye as being sharp, the little fuzz on the dragonfly head is sharp, etc. If there is a lack of sharpness on the eye, it's undetectable to me. The compressed version here for the forum looks a lot worse, sharpness wise, everywhere. I can't prove that to you with the posted image
but it does. Looking at the full sized image at 200%, I think the exact focal point was probably the base of the trailing wing on the right side of the critter. And that focal point is why the abdomen is in focus and really the head also, as I was pretty much directly side-on (well, the posted image just looks soft all around).
At a distance of a little over 10 feet, I should have stopped to 8.0 (or more!) anyway to give a smidgen more DOF (had enough light) but I really don't think focus was missed here, whatever problems the image might have in general. He posed for a little, so I had time to tweak a bit.