ROSE BENGAL STAINING


Rose bengal is another stain 
which stains epithelial cells 
(on the cornea or conjunctiva) 
where the mucoid layer of 
the tear film is missing, dead 
or degenerating cells, and 
mucous strands.  It is supplied 
on strips just like fluorescein 
or as a solution.  Only a small 
amount of the stain is required 
and if too much is instilled it 
will be uncomfortable for the 
patient.  One must be careful 
with it as it will stain clothing 
and not be easily washed out 
as fluorescein is.

Areas of staining will appear as reddish-purple spots.