Eye Swab for C/S

Function

The Eye Swab for Culture and Sensitivity (C/S) is a diagnostic procedure performed to identify the presence of pathogenic microorganisms—such as bacteria or fungi—in the conjunctiva or cornea. After the specimen is collected, it is placed in a growth medium (Culture) to see if organisms multiply. If a pathogen is found, it is then tested against various antibiotics (Sensitivity) to determine which medication effectively kills the infection.

Why it is Ordered

This test is vital for treating ocular infections that do not respond to broad-spectrum drops. It is specifically used for:

• Bacterial Conjunctivitis: Identifying highly contagious bacterial strains.
• Keratitis: Inflammation of the cornea that can lead to blindness if not treated with targeted therapy.
• Endophthalmitis: A severe internal eye infection, often occurring after surgery.
• Neonatal Conjunctivitis: Testing newborns who may have contracted infections during birth.

Associated Conditions

• Staphylococcus aureus: A common cause of bacterial eye infections.
• Neisseria gonorrhoeae: A rare but sight-threatening cause of hyperacute conjunctivitis.
• Pseudomonas aeruginosa: Often associated with contact lens contamination.