Logo  Loading...
e
m
e
r
g
e
n
c
y

Keratitis Explained: Causes, Signs, and Best Hospital Treatment Options

Keratitis is the inflammation of the cornea, the clear, dome-shaped surface at the front of the eye that covers the pupil and iris. This condition can be infectious (caused by bacteria, viruses, fungi, or parasites) or non-infectious (due to injury, dryness, or irritation). If not treated promptly, keratitis can lead to corneal damage, scarring, and permanent vision loss. Early diagnosis and timely hospital care for keratitis treatment are essential to prevent complications. People with symptoms such as eye redness, pain, blurred vision, and light sensitivity should seek emergency care for keratitis from an eye specialist right away to protect vision. For quality eye care services, a multispecialty hospital for keratitis with experienced ophthalmologists offers comprehensive evaluation, tailored medication, and advanced management options. Patients looking for the best hospital for keratitis treatment and the best keratitis treatment in South India can benefit from specialized eye care centers with expertise in corneal infections and vision preservation.

Symptoms and Causes

What are the symptoms of keratitis?

Symptoms of Keratitis include

  • Redness of the eye.
  • Eye pain or discomfort.
  • Sensitivity to light (photophobia).
  • Blurred or reduced vision.
  • Excessive tearing or discharge.
  • Foreign body sensation.
  • Difficulty opening the eye

Causes of keratitis

Keratitis can develop due to infectious or non-infectious factors, depending on what triggers the inflammation of the cornea.
Bacterial Infections: Commonly caused by bacteria such as Staphylococcus or Pseudomonas, especially in people who wear contact lenses improperly.

  • Viral Infections: Often due to the herpes simplex virus or varicella-zoster virus, which can cause recurrent episodes of eye inflammation.
  • Fungal Infections: Occur after eye injuries involving plant material or in people using contaminated contact lenses or eye drops.
  • Parasitic Infections (Acanthamoeba): A rare but serious cause linked to exposure to contaminated water, particularly in contact lens users who rinse lenses with tap water.
  • Eye Injury or Trauma: Scratches, foreign objects, or minor injuries can damage the cornea and trigger inflammation.
  • Improper Contact Lens Use: Wearing lenses too long, sleeping in them, or poor hygiene increases the risk of keratitis.
  • Dry Eyes: Reduced tear production or poor tear quality can make the cornea more vulnerable to irritation and inflammation.
  • Exposure to UV Light: Prolonged exposure to sunlight, tanning lamps, or welding arcs can cause ultraviolet keratitis.
  • Weakened Immune System: Conditions like diabetes, HIV, or the use of immunosuppressive medications raise the risk of corneal infections.

Diagnosis of Keratitis

Keratitis is diagnosed through a detailed eye examination combined with tests that help identify the cause and severity of corneal inflammation.

  • Medical History & Symptom Review: The doctor asks about eye pain, redness, vision changes, contact lens use, recent eye injuries, or exposure to water or infections.
  • Eye Examination (Slit-Lamp Exam): A slit-lamp microscope is used to closely examine the cornea for swelling, ulcers, scratches, or signs of infection. This is the key diagnostic test.
  • Fluorescein Eye Staining: A fluorescein eye stain test uses a special dye applied to the eye’s surface to highlight areas of corneal damage or ulcers. Under a blue light or cobalt-blue filter, the dye makes defects in the corneal epithelium glow bright green, helping eye doctors detect keratitis, corneal abrasions, or ulcers more easily during an eye exam.
  • Corneal Scraping or Culture: If an infection is suspected, a small sample from the cornea may be taken to identify bacteria, viruses, fungi, or parasites and guide treatment.
  • Vision Testing: Visual acuity tests help determine how much the inflammation has affected eyesight.
  • Tear Tests (if needed): Tear quantity and quality may be checked when dry eye–related keratitis is suspected.

What are the keratitis risk factors?

Certain habits, health conditions, and environmental exposures can increase the risk of developing keratitis.

  • Poor Eye Hygiene: Touching the eyes with unclean hands or using contaminated eye makeup or eye drops increases infection risk.
  • Eye Injury or Trauma: Scratches, foreign bodies, or minor injuries to the eye can damage the cornea and allow infection or inflammation to develop.
  • Contact Lens Use: Wearing contact lenses, particularly using them overnight, following poor cleaning practices, or using contaminated lens solutions, is one of the most common risk factors for keratitis.
  • Exposure to Contaminated Water: Swimming, showering, or using hot tubs while wearing contact lenses raises the risk of bacterial or Acanthamoeba keratitis.
  • Dry Eye Syndrome: Reduced tear production or poor tear quality leaves the cornea less protected and more prone to irritation and infection.
  • Weakened Immune System: Conditions such as diabetes, HIV/AIDS, cancer, or use of steroid or immunosuppressive medications increase susceptibility.
  • Previous Eye Infections or Surgery: A history of eye disease or eye surgery can make the cornea more vulnerable to inflammation.
  • Excessive UV Light Exposure: Prolonged exposure to sunlight, tanning beds, or welding arcs without eye protection can cause ultraviolet keratitis.

What treatment options are available for keratitis?

Treatment for keratitis depends on the underlying cause and the severity of inflammation. Early treatment is important to prevent complications and protect vision.

Antibiotic Eye Drops or Ointments: Used for bacterial keratitis to clear the infection and reduce corneal inflammation. Severe cases may require frequent dosing.

Antiviral Medications: Prescribed for viral keratitis, particularly herpes simplex–related infections, to control viral activity and reduce recurrence.

Antifungal Medications: Required for fungal keratitis and usually given as antifungal eye drops, sometimes combined with oral antifungal drugs.

Anti-parasitic Treatment: Used for Acanthamoeba keratitis and involves specialized eye drops over a prolonged period.

Corticosteroid Eye Drops: May be carefully prescribed to reduce inflammation and scarring, but only under close medical supervision and typically after infection control.

Artificial Tears and Lubricants: Help relieve irritation and protect the cornea in mild or noninfectious keratitis, including dry eye–related cases.

Pain Relief and Supportive Care: Medications may be given to reduce pain, light sensitivity, and discomfort during healing.

Stopping Contact Lens Use: Contact lenses should be avoided until the cornea has healed completely and the infection has resolved.

Surgical Treatment: In severe or non-healing cases, procedures such as corneal debridement or corneal transplantation may be necessary.