Eye strain

Euphrasia (eyebright) springs to mind, but my books tell me it grows on chalky soil. Not much hope of finding any around here then! Most of this area sits on beds of Millstone Grit, which makes for a much more acidic soil than chalk does.

The eye strain is Tom's, because he's using computers just about every waking hour.

If I think about it, there'll be dietary things we can do for it, and other herbs. I'm loathe to buy anything unless we get desperate - I prefer to use locally grown stuff whenever possible.