Eye Swab For C/S (Right)

Function

An eye swab for Culture and Sensitivity (C/S) involves collecting discharge or secretions from the conjunctiva or eyelid margin of the right eye using a sterile swab. Unlike corneal scraping, this is non-invasive and primarily targets surface-level infections like conjunctivitis (pink eye) or blepharitis (eyelid inflammation).

Why it is Ordered

While most conjunctivitis is viral and self-limiting, swabs are ordered to:

• Identify Bacterial Pathogens: Differentiate between viral, bacterial, and allergic causes of red-eye.
• Neonatal Screening: Test newborns for Gonorrhea or Chlamydia infections acquired during birth.
• Chronic Infections: Investigate recurring infections that don't respond to standard hygiene or over-the-counter drops.
• Hospital Protocol: Check for multi-drug resistant organisms in a healthcare setting.

Associated Conditions

Commonly identified bacteria include Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella. In cases of hyper-acute discharge, Neisseria gonorrhoeae is a serious concern. The 'Sensitivity' portion of the test ensures that the prescribed eye drops are effective against the specific strain found, preventing the development of antibiotic resistance and ensuring rapid recovery of the ocular surface.