"BRI reduced CFU in abraded corneas significantly more than intact corneas (P<0.05, M-W) suggesting the corneal epithelium acts as a barrier for penetration. There was no difference in CFU in abraded and intact corneas with VAN (P>0.05, M-W) suggesting high penetration through the corneal epithelium. Conclusions: BRI demonstrated broad spectrum in vitro activity against ocular pathogens. BRI was equally efficacious as VAN in a MRSA keratitis model only when the corneal epithelium was removed."