Keratoconjunctivitis

Keywords: Corneal ulcer

Causes

Appropriate Tests

Infection

Conjunctival swab or corneal scrapings for microscopy and culture. Investigation is only indicated for severe or recurrent infection.

  • Neisseria gonorrhoeae

 

  • Chlamydia trachomatis

Conjunctival swab for chlamydia trachomatis detection and genotyping, diagnosis is clinical

  • Herpes simplex virus infection

NAA for HSV

  • Varicella zoster infection

NAA for V2V

  • Fungal infection

Corneal scrapings for MCS fungal.

  • Acanthamoeba sp

Special media required for culture; consult pathologist prior to specimen collection.

Allergic

 

  • Seasonal

 

  • Vernal conjunctivitis

 

  • Local treatments

 

Metabolic

 

  • Renal failure - chronic

 

  • Hypercalcaemia

 

Reiter's syndrome

 

Erythema multiforme

 

Sicca syndrome, especially

 

  • Sjögren syndrome