On Visit 1 (Day -1 or -2), your eye doctor and/or study staff will ask you to sign the written informed consent. Screening tests will be done, which include urine pregnancy test for all women who are able to become pregnant, and other eye exams, such as Best Corrected Visual Acuity, Biomicroscopy, Intraocular Pressure (IOP), Epiphora Assessments, Schirmer's Test, and Probing and Irrigation Test. Your eye doctor and/or assistant will explain these different eye exams, or any questions you may have, at the day of your visit. You will also be asked about the different medications that you are currently taking. You will be given participant diaries for you to record or keep track of your medication use and how many times you dab your tears. You will then be given the schedule of your next visit.