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7093118 
Journal Article 
Fluorescein punctate staining traced to superficial corneal epithelial cells by impression cytology and confocal microscopy 
Mokhtarzadeh, M; Casey, R; Glasgow, BJ; , 
2011 
Yes 
Investigative Ophthalmology and Visual Science
ISSN: 0146-0404
EISSN: 1552-5783 
ASSOC RESEARCH VISION OPHTHALMOLOGY INC 
ROCKVILLE 
2127-2135 
English 
21212176 
WOS:000289282600006 
The basis of fluorescein-associated superficial punctate staining in dry eyes is controversial. Prior explanations include fluorescein pooling in surface erosive defects, intercellular trapping of fluorescein, and intracellular staining in dead cells. In this study, the hypothesis that punctate erosions are individual cells with enhanced fluorescence was tested.