Stephania for eye pain?

Hello there,
Been trying to get Stephania powder to use it as eyedrops. Would like to know which kind to get and where to buy it from.... cd37 you know a lot about Buhners, hope you can help. Will the eyedrops help with the pinching eye pain?
Thanks in advance

Last time I checked, the only Buhner-recommended source that had Stephania tetranda root herb in stock was Monteagle Herbs:

monteagleherbs.com/herbprices.shtml

Both Woodland Essence and Sage Woman Herbs sell the tincture.

As you can see from the link PeteZa shared, Stephania can be used for an eye decoction. I have no experience with eye pain - I take it for my Bells Palsy symptoms and am very happy with the herb.