Evaporation

•  - Environment
•  - Inflammation
•  - Blepharitis
•  - Age
•  * Evaporation
•  - Hormonal flux
•  - Denervation
•  - Contact lenses
•  - Menopause
•  - LASIK
•  - Autoimmune
•  - Basement Membrane Dystrophy

Evaporation: The ocular surface would be completely dry were it not for the protective lipid (oil) layer produced by the eyelids' meibomian glands. In a normal eye, only a small percentage of tears evaporate but when dry eye is accompanied by meibomian gland dysfunction (as is often the case), evaporation can increase to nearly the total amount produced.