I searched a lot yesterday for any articles anywhere describing this particular anomaly, I could not find any. I think you've done what a reasonable person would try, if the feathers grow in again it will obviously be damaging to the eye, so if you were to chose to cull I think that would be...
Let's see if some more people who may have seen something like this chime in before you decide. If it turns out to be something that has no remedy, you can always make the decision.
@azygous , @Texas Kiki , @casportpony ,
I've never seen that before. If it were mine I would pull those two feathers, you can use a pair of tweezers or needlenose pliers, or forceps to grab at the base and give a firm tug to remove them, and cross fingers they don't regrow. You can usually get Terramycin eye ointment at TSC, it's a...