Table 1. Number of rabbits used for each “treatment” condition and for each observation time.

Treatment	dose	75 min+2 h+4 h+24 h	4 h	24 h
Sterile PBS	15 instillations	2	4	2
0.02%BAK	15 instillations	2	4	2
0.02%BAK+latanoprost	15 instillations		4	2
0.015%BAK+travoprost	15 instillations		4	2
0.005%BAK+bimatoprost	15 instillations		4	2
BAK-free travoprost Z	15 instillations		4	2
BAK-free tafluprost	15 instillations		4	2
No treatment	Normal rabbits	2