The purpose of this study is to show that the multi-colored Placido Disk set-up can get reliable data over long time periods.

Inclusion Criteria:

• Subjects must have clinically diagnosed Dry Eye or Sjörgren's syndrome.
• Good general health (defined by medication use that has not changed within the last month and the absence of medical conditions that are deemed confounding to the data as determined by the PI)
• Ability to give informed consent
• Willing to spend time for the study; approximately 30 minutes for a visit
• Either gender
• Any racial or ethnic origin

Exclusion Criteria:

• Use of any prescription ocular medication (such as but not limited to, glaucoma medications and Restasis) used within 14 days of the screening visit or started prior to the measurement visit(s).
• Current eye disease, infection or inflammation that affects the surface of the eye such as, but not limited to blepharitis and ocular allergy.
• Past eye surgery, such as, but not limited to, refractive surgery. Subjects who have had cataract surgery less than one year ago.