A Safety and Efficacy Study of a New Eye Drop Formulation in Patients With Dry Eye Disease.

Change From Baseline in Tear Break-up Time (TBUT)

TBUT is defined as the time required for dry spots to appear on the surface of the eye after blinking. The longer it takes, the more stable the tear film. The worse eye is used for the calculations and is defined as the eye with the shortest average TBUT at Baseline. A positive number change from Baseline indicates improvement and a negative number change from Baseline indicates a worsening.

Time frame: Baseline, Day 90

Change From Baseline in Corneal Staining Score

Total corneal staining with fluorescein was measured in the worse eye using a 6-point scale where 0= none, no staining (best) to 5=severe staining (worst). The total score is calculated as the sum of 5 regions of the cornea, resulting in a possible minimum score of 0 and a maximum possible score of 25 (severe staining score of 5 in all 5 regions). The worse eye is defined as the eye with the highest score at Baseline. A negative change from Baseline represents a decrease in staining (improvement).

Time frame: Baseline, Day 90

Change From Baseline in Conjunctival Staining Score

Total conjunctival staining with lissamine green was measured in the worse eye using a 6-point scale where 0= none (best), no staining to 5=severe staining (worst). The total score is calculated as the sum of the 6 regions of the conjunctiva, resulting in a minimum possible score of 0 maximum possible score of 30 (severe staining score of 5 in 6 regions). The worse eye is defined as eye with the highest score at Baseline. A negative change from Baseline represents a decrease in staining (improvement).