title: Corneal hydration changes during the normal menstrual cycle--a preliminary study.
mesh_terms: D000328:Adult; D003261:Contact Lenses; D003315:Cornea; D004967:Estrogens / Q000097:blood*; D005260:Female; D006801:Humans; D008598:Menstruation; D010507:Periodicity; D011374:Progesterone / Q000097:blood*
chemical_list: D004967:Estrogens; D011374:Progesterone