2. ROSE BENGAL
Is -4,5,6,7-tetrachloro-2',4',5',7'-
tetraiodofluorescein
It is a derivative of flurescein dye
Is a brownish- red powder, available in
stripes also
Water soluble material
3. It will cross the cell membranes of dead cells
or degenerated cells, but not living cells
Its sodium salts commonly used in eye drops
to stain damaged conjunctival and corneal
cells, thereby identify damaged area
4. PROPERTIES
Stains dead and devitalized tissues
Anti viral activity
Stains mucus threads and corneal filaments
It suggest deficiency of tear components like
mucin and albumin
5. Very sensitive and stains bulbar conjunctiva
and cornea in early stage of dry eye
syndrome
It is irritating
Available as stripes and solution
Usually seen with white light
Can also seen with green filter