Dr. Rosenthal had me start taking Delsym cough syrup (as directed on the package) to see if it would help with what may be a neuropathic component to my dry eye pain. I honestly didn't think much of it, didn't even google it, but figured I might as well give it a go.
Today, after a month of using it, I finally got around to googling it and there are some abstracts out there on the subject.
Just thought I'd mention it in case anyone wants to discuss this possibility with their doc.
Not sure at this point if it's helping me or not... so much has been going on in the last month with the sclerals that it makes it tough to sort out what's going on... in any case, whether or not it did or didn't do anything for me is irrelevant to whether or not it will help you, so I figured it was worth posting about anyways.