Hydration of the cornea.
D001826:Body Fluids; D001834:Body Water; D002940:Circadian Rhythm; D003261:Contact Lenses / Q000009:adverse effects; D003276:Contraceptives, Oral / Q000009:adverse effects; D003315:Cornea; D005128:Eye Diseases / Q000175:diagnosis; D005260:Female; D006801:Humans; D008598:Menstruation; D011247:Pregnancy; D014065:Tonometry, Ocular; D014867:Water
D003276:Contraceptives, Oral; D014867:Water