Table 7. Bacteriological findings from the culture of lacrimal sac biopsy specimens obtained from 33 patients undergoing dacryocystorhinostomy for nasolacrimal duct obstruction.

Micro-organisms isolated	n of isolates
Gram positive organisms	19
Staphylococcus epidermidis	13
Staphylococcus aureus	4
Other staphylococcus sp.	1
Corynebacterium sp.	1
Gram negative organisms	14
Pseudomonas aeruginosa	5
Klebsiella pneumoniae	4
Escherichia coli	1
Enterobacter sp.	3
Acinetobacter lwoffii	1
Fungal organisms	1
Candida sp.	1
Mixed flora	2
No growth	1