Tear film osmolarities were 307.1 (SD 11.3) and 308.9 mosm/l (SD 14.0) in normal
individuals and patients with DES, respectively. Tear film osmolarity in dry eye
patients did not differ significantly from values obtained in the control group, even
when ≥5 of 6 dry eye signs/symptoms were present and patients were clinically perceived
as severe DES patients (fig. 6).
Moreover, tear film osmolarity did not correspond to the use of artificial tears (fig.
7).