Can I use sterisporin ophthalmic ointment for conjunctivitis while breastfeeding?

Hello I have conjunctivitis in my eye. I am breastfeeding my baby. I would like to know if I can use the ointment that I went to the pharmacy to get. I forgot to ask the question there. It is sterisporin 500-10000UI/G, ophthalmic ointment. It contains zinc bacitracin USP (antibiotic) 500 U/G and polymyxin B sulfate USP (antibiotic) 10000. U/G. If not, how long should I wait before breastfeeding. Thank you