There was no significant difference between the test and control groups for the incidence of significant corneal infiltrative events ( 1.3 vs. 4.9 % , p = 0.368 ) , total corneal infiltrative events ( 2.6 vs. 4.9 % , p = 0.682 ) , or mechanical events ( 1.3 vs. 2.5 % , p = 1.00 ) .