I bought in a few Legbar chicks, one of which had 3 broken toes on one leg. It has never bothered her, she is now 3 months. She was very down a week ago but I dont think it was anything to do with her toes. She has now perked up again thanks to Nutridrops and Oregano and looks fine, but...
I always trim the feathers until they can see either side otherwise they just have tunnel vision. I just do it carefully but the trouble is that after you have trimmed the feathers closest to their eyes, other feathers fall down so you have to keep going!
They do love it when they can see...