Dry eye syndrome (DES) is a multifactorial disease of the tears and ocular surface. Recently, treatment with autologous serum eye drops (AS-ed) has been frequently used in these patients.
Significant improvement correlates well with clinical, laboratory and subjective findings. It is assumed that one of the key factors in the development of the disease is increased tear osmolarity.
The aims of our study were to test tear osmolarity measurements in clinical practice, to examine if osmolarity values differ before and after a 3-month application of 20% AS-ed, and to determine if the values differ between patients with severe DES and healthy individuals.