I'm familiar with boric acid as an ingredient in ant/roach products. Can't say that I'm familiar with the use as an eye wash, though! I think the eye ph and everything would be an instant no-no to using boric acid in the eye. I could see it doing a lot of damage, from how I see things. Maybe if it was mixed with something to dilute and lessen the strength of it, though, I don't know. I haven't read any other's posts on this yet, but maybe someone else has heard of something.