Inclusion Criteria:  Presents with ocular surface discomfort or for dry eye care Best corrected visual acuity of 20/40 or better in each eye Subject reported duration of symptoms of at least 3 months 100 subjects will be required to be habitual contact lens wearers as defined by use of contact lenses at least 5 hours per day at least 5 days per week for the last year.  Exclusion Criteria:  Use of contact lenses on the day of the visit Pregnant or nursing Irregular corneas (e.g., ectatic disease, transplantation, or corneal dystrophies) Ocular surgery in the past 3 months Ocular infection in the past 3 months Active ocular allergies