Infective keratitis or Infection of the cornea

Medium urgency
-Moderately severe

Keratitis is an inflammation of the cornea, the transparent part of the eye.

The most common causes are of infectious origin (bacterial, viral, fungal and parasitic). Risk factors include excessive use of contact lenses, failure to follow recommended hygienic therapeutic instructions, use of ocular corticosteroids, changes in the immune system, etc.

It usually causes severe eye pain, foreign body sensation, redness of the eye, tearing, abnormal intolerance to light due to the discomfort or pain it causes, and loss of vision.

Diagnosis is based on a detailed clinical history, a thorough ophthalmological examination and cultures of the infected area.

Infectious keratitis can progress rapidly and usually requires urgent antibacterial, antifungal or antiviral therapy to eliminate the pathogen.

Bibliographic references
  1. Deborah S Jacobs. Evaluation of the red eye. UpToDate. Feb 24, 2016.
  2. Collier SA, Gronostaj MP, MacGurn AK, et al. Estimated burden of keratitis--United States, 2010. MMWR Morb Mortal Wkly Rep 2014; 63:1027.
  3. Hindman HB, Patel SB, Jun AS. Rationale for adjunctive topical corticosteroids in bacterial keratitis. Arch Ophthalmol 2009; 127:97.
  4. Cohen EJ. The case against the use of steroids in the treatment of bacterial keratitis. Arch Ophthalmol 2009; 127:103.
  5. Ray KJ, Srinivasan M, Mascarenhas J, et al. Early addition of topical corticosteroids in the treatment of bacterial keratitis. JAMA Ophthalmol 2014; 132:737.
  6. Herretes S, Wang X, Reyes JM. Topical corticosteroids as adjunctive therapy for bacterial keratitis. Cochrane Database Syst Rev 2014; :CD005430.
Author
Dr. Elvira Moreno
Copyright
© TeckelMedical 2026

Symptoms

    Eye pain


    Bothered by light


    Redness in only one eye


    Sudden loss of sight


    Eyelid with painful vesicles

Pre-hospital care recommendations

Check with your general practitioner about the prescription for antibiotics.