The hypothesis is that the measured tear osmolarity from study participants decrease with sustained use of a over-the-counter artificial tears, TheraTears® lubricating drops, over an eight week period. Participant's dry eye symptoms would also improve with sustained use of TheraTears® lubricating drops.
The objective of the study is to see if there is a change in tear osmolarity over time when moderate to severe dry eye subjects are treated with TheraTears® lubricating drops.