Ozdemir, M Age- and gender-related tear function changes in normal population. [electronic resource] - Eye (London, England) Jan 2010 - 79-83 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1476-5454 Standard No.: 10.1038/eye.2009.21 doi Subjects--Topical Terms: AdolescentAdultAge FactorsAgedAged, 80 and overChildFemaleHumansMaleMiddle AgedProspective StudiesSex FactorsStatistics, NonparametricTears--metabolismYoung Adult