What is Corneal Ulcer (Keratitis)?

A corneal ulcer (keratitis) is an erosion or an open sore on the cornea which is the thin clear structure of the eye that refracts light. If the cornea becomes inflamed due to infection or injury, an ulcer may develop.

Symptoms of Corneal Ulcer (Keratitis)

  • Redness
  • Pain
  • Watering
  • Gritty sensation
  • Blurry vision
  • Discharge
  • Burning
  • Itching
  • Light sensitivity

Causes of Corneal Ulcer (Keratitis)

  • Contact lenses –

    contaminated solution, poor hygiene, over usage, sleeping with contact lenses on, using tap water or swimming with contact lens on. Wearing lenses for extended periods blocks the supply of oxygen to the cornea, making it susceptible to infections.

  • Trauma –

    chemical injury, thermal burn, bee sting, animal tail, makeup or vegetative matter like the branch of a tree, sugarcane

  • Post-surgery –

    delayed healing, loose sutures

  • Lid deformities –

    inward or outward turning of eyelid, misdirection of eyelashes constantly rubbing over the cornea, incomplete closure of eyes

  • Decreased nerve supply to the cornea –

    seen in diabetics and bell’s palsy patients

  • Allergic conjunctivitis

  • Vitamin A deficiency

  • Prolonged use of eye drops –

    corticosteroids

  • Severe dry eyes –

    caused by medical conditions like diabetes mellitus, thyroid disorder, vitamin A deficiency, rheumatoid arthritis, Sjogren syndrome, Stevens-Johnson syndrome

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