Chickweed eyewash for keratitis

Hello,

I have a chicken with what I think is keratitis, bluish haze all over the eye. I've been using a chickweed tea twice a day, placing one or two drops in the eye for about a week now. I'm not sure it's doing any good. There may be a little improvement. Does anyone have experience with this? Do I keep up with the the regimen or do I give up the natural approach and use the feed store antiseptic spray?