consultant of lazik and refractive eye
Keratitis
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Corneal inflammation is a kind of corneal inflammation, which is the transparent, dome-like tissue at the front of the eye that covers the pupil and iris. Corneal inflammation may be associated with infectious diseases or other non-communicable causes. Non-corneal inflammation of the cornea can be caused by a minor injury, such as wearing contact lenses for a long time or entering a foreign body into the eye. Keratitis sometimes occurs due to infections involving bacteria, viruses, fungi, and parasites.

If you have a red eye or other keratitis symptoms, you should schedule a visit to your doctor immediately. Through immediate care, mild to moderate cases of keratitis can be treated effectively without loss of vision. If the treatment is ignored, or if the infection is acute, corneal inflammation can lead to serious complications that damage permanent vision.

Symptoms
Corneal signs and symptoms include:

Red eye
Eye pain
Excessive secretion of tears or other excretions from your eyes
Difficulty opening the eyelid due to pain or irritability
Cloudy vision
Low visibility
Light Sensitivity (Light Phobia)
Feel as if there is something in your eyes
When will you visit your doctor?
If you notice any signs or symptoms of keratitis, tell your doctor. Delays in the diagnosis and treatment of keratitis can lead to serious complications, including blindness.

Causes of keratitis include:

injury. If any body causes scratching or damage to the surface of the cornea, this may lead to non-contagious corneal infection. Furthermore, infection of microorganisms may allow the cornea to reach the affected cornea, causing corneal inflammation.

Contaminated contact lenses. Bacteria, fungus, or parasites, especially microvascular parasites, may reside on the surface of contact lenses or in their portable case. The cornea may become contaminated when you place the lens in your eyes, leading to corneal infection. Excessive wear of contact lenses can cause corneal inflammation, which can become contagious.

Viruses. Herpes viruses (herpes simplex and herpes zoster) can cause inflammation of the cornea.

Bacteria. The bacteria that cause gonorrhea can cause keratitis.

Contaminated water. Bacteria, fungi and parasites in water, especially in the oceans, rivers, lakes and hot tubs, can enter your eyes when swimming and lead to keratitis.
However, in the case of exposure to these bacteria, fungi or parasites, it is not likely to infect the cornea intact infection unless there is some previous erosion of the surface of the cornea.