I noticed several posts concerning cats that have black boogers from their eyes. I took my Buffy to the vet because it reoccurs on a daily basis. I clean them away (which) Buffy doesn't like. The vet have me a topical ointment called Bausch & Lomb Neomycin and Polymyxin B Sulfate, Bacitracin Zinc and Hydrocortisone Ophthalmic Ointment USP. I found it on Chewy.com you have to have a prescription but maybe to save a vet visit its a good choice.