Rolando, M The effect of hyperosmolarity on tear mucus ferning. [electronic resource] - Fortschritte der Ophthalmologie : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft 1986 - 644-6 p. digital Publication Type: Journal Article ISSN: 0723-8045 Subjects--Topical Terms: AdultAgedHumansKeratoconjunctivitis--diagnosisKeratoconjunctivitis Sicca--diagnosisMiddle AgedMucus--analysisOsmolar ConcentrationTears--analysis