Figure 1From: Effectiveness of ophthalmic solution preservatives: a comparison of latanoprost with 0.02% benzalkonium chloride and travoprost with the sofZia preservative system Reduction in microorganism counts over 28 days with (A) latanoprost with benzalkonium chloride (BAK) and (B) travoprost with sofZia. CFU: colony-forming unit; Inoc: inoculation. For ease of graphing <1.0 log was plotted as "0".Back to article page