Safety and Efficacy Pilot Study of AzaSite® for Four Weeks in Subjects With Blepharitis

Inclusion Criteria: * diagnosis of moderate to severe chronic posterior blepharitis * If female of childbearing potential, are non-pregnant and non-lactating Exclusion Criteria: * had ocular surface surgery (LASIK, refractive, pterygium) within the past year * unwilling to discontinue use of contact lenses during the study * have glaucoma * unable or unwilling to withhold the use of eyelid scrubs during the study * have a serious systemic disease or uncontrolled medical condition that in the judgment of the investigator could confound study assessments or limit compliance * currently using any preserved topical ocular medications (with the exception of unpreserved tear substitutes) at the time of entry into the study or during study participation