A Comparison of the Safety and Comfort of AC-170

The purpose of this study is to evaluate the safety and comfort of AC-170 compared to a placebo.

Inclusion Criteria:

• Able and willing to avoid the use of ocular medications or topical ocular preparations within protocol specific time period.

Exclusion Criteria:

• Known contraindications or sensitivities to the study medication or its components.
• Any ocular condition that, in the opinion of the investigator, could affect the subjects safety or trial parameters.
• Use of disallowed medications during the period indicated prior to the study enrollment or during the study.