Doctor my eyes

This year I can once more thread thin nylon leader through the eyes of flies. This is very odd, because my eyes have got slightly worse since last year, when the only way I could manage this was to brace my fingertips together. Now I can hold the fly in one hand and the line in the other, and stab it through as easily as when I was 22. Since my eyes have got worse, I can only assume that the controlling software has improved. I can’t see as much as I could even last year, but I have somehow managed to recognise better the cues that tell me whether the nylon is on target or not.