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Total redness: treatment differences in least squares means at onset and 24 hours post-CAC.
Notes: *P<0.0001 overall and at all other time points versus vehicle; **P<0.05 overall and at all time points versus olopatadine 0.2%. The differences in least squares means for total redness between olopatadine 0.77% and both vehicle and olopatadine 0.2% were significant (P<0.05) at all three post-CAC time points at 7, 15, and 20 minutes.
Abbreviation: CAC, conjunctival allergen challenge.
