This study will evaluate the duration of action of LASTACAFT® and Pataday™ as compared to artificial tears (placebo) in the prevention of ocular itching associated with allergic conjunctivitis.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
127
One drop of alcaftadine 0.25% ophthalmic solution instilled in each eye at Day 0 and Day 14.
One drop of olopatadine 0.2% ophthalmic solution instilled in each eye at Day 0 and Day 14.
One drop of placebo instilled in each eye at Day 0 and Day 14.
Unnamed facility
Philadelphia, Pennsylvania, United States
Ocular Itching Evaluated by the Subject at 3, 5, and 7 Minutes Post Challenge on Day 0 at Hour 16
Ocular itching evaluated by the subject at 3, 5, and 7 minutes post challenge on Day 0 (Visit 3) at hour 16. Subjects scored their ocular itching on a numeric analog scale ranging from 0=None to 4=Incapacitating Itch with an Irresistible Urge to Rub (0.5 increments were allowed). For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less itching.
Time frame: Day 0 Hour 16
Ocular Itching Evaluated by the Subject at 3, 5, and 7 Minutes Post Challenge on Day 14 at Hour 24
Ocular itching evaluated by the subject at 3, 5, and 7 minutes post challenge on Day 14 (Visit 4) at hour 24. Subjects scored their ocular itching on a numeric analog scale ranging from 0=None to 4=Incapacitating Itch with an Irresistible Urge to Rub (0.5 increments were allowed). For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less itching.
Time frame: Day 14 Hour 24
Conjunctival Redness Evaluated by the Investigator at 7, 15, and 20 Minutes Post Challenge on Day 14 at Hour 24
Conjunctival redness evaluated by the investigator at 7, 15, and 20 minutes post challenge on Day 14 (Visit 4) at hour 24. Investigators scored conjunctival redness on a numeric analog scale ranging from 0=None to 4=Extremely Severe (0.5 increments were allowed). For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less conjunctival redness.
Time frame: Day 14 Hour 24
Ciliary Redness Evaluated by the Investigator at 7, 15, and 20 Minutes Post Challenge on Day 14 at Hour 24
Ciliary redness evaluated by the investigator at 7, 15, and 20 minutes post challenge on Day 14 (Visit 4) at hour 24. Investigators scored ciliary redness on a numeric analog scale ranging from 0=None to 4=Extremely Severe (0.5 increments were allowed). For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less ciliary redness.
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Time frame: Day 14 Hour 24
Episcleral Redness Evaluated by the Investigator at 7, 15, and 20 Minutes Post Challenge on Day 14 at Hour 24
Episcleral redness evaluated by the investigator at 7, 15, and 20 minutes post challenge on Day 14 (Visit 4) at hour 24. Investigators scored episcleral redness on a numeric analog scale ranging from 0=None to 4=Extremely Severe (0.5 increments were allowed). For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less episcleral redness.
Time frame: Day 14 Hour 24
Chemosis Evaluated by the Investigator at 7, 15, and 20 Minutes Post Challenge on Day 14 at Hour 24
Chemosis evaluated by the investigator at 7, 15, and 20 minutes post challenge on Day 14 (Visit 4) at hour 24. Investigators scored chemosis on a numeric analog scale ranging from 0=None to 4=Severe (0.5 increments were allowed). For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less chemosis.
Time frame: Day 14 Hour 24
Eyelid Swelling Evaluated by the Subject at 7, 15, and 20 Minutes Post Challenge on Day 14 at Hour 24
Eyelid swelling evaluated by the subject at 7, 15, and 20 minutes post challenge on Day 14 (Visit 4) at hour 24. Subjects scored eyelid swelling on a numeric analog 4-point scale ranging from 0=None to 3=Severe. For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less lid swelling.
Time frame: Day 14 Hour 24
Tearing Evaluated by the Subject at 7, 15, and 20 Minutes Post Challenge on Day 14 at Hour 24
Tearing evaluated by the subject at 7, 15, and 20 minutes post challenge on Day 14 (Visit 4) at hour 24. Subjects scored tearing on a 5-point numeric analog scale ranging from 0=None/Normal to 4=Very Severe. For each subject, the score for both eyes was averaged (i.e., one score per subject). A lower score was indicative of less tearing.
Time frame: Day 14 Hour 24