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Table 2 Parenteral and ophthalmic preparation European Pharmacopoeia criteria A and B (With permission from the European Pharmacopoeia[11])

From: Effectiveness of ophthalmic solution preservatives: a comparison of latanoprost with 0.02% benzalkonium chloride and travoprost with the sofZia preservative system

 

Log reduction

  

6 hours

24 hours

7 days

14 days

28 days

Bacteria

A

2

3

-

-

NR

 

B

-

1

3

-

NI

Fungi

A

-

-

2

-

NI

 

B

-

-

-

1

NI

  1. NI: no increase; NR: no recovery.