Keratitis

Eyesight depends on a complex series of interactions between the different parts of the eye. (Read about "The Eye") The cornea is the clear covering of the front of the eye. The basic definition of keratitis is any inflammation of the cornea of the eye.

Keratitis can be caused by a number of things from infections to injuries. (Read about "Eye Injury") Sometimes the cornea is damaged after a foreign object has penetrated the tissue, such as from a poke in the eye. At other times, bacteria or fungi (Read about "Microorganisms") from a contaminated contact lens can pass into the cornea. These infections can reduce visual clarity, produce corneal discharges and perhaps erode the cornea. Corneal infections can also lead to corneal scarring, which can impair vision and may require a corneal transplant. (Read about "Transplants")

As a general rule, the deeper the corneal infection is, the more severe the symptoms and complications. The National Eye Institute (NEI) says that corneal infections, although relatively infrequent, are the most serious complication of contact lens wear to correct refractive errors. (Read about "Refractive Errors: Myopia, Hyperopia, Astigmatism and Presbyopia")

Minor corneal infections are commonly treated with anti-bacterial eye drops. If the problem is severe, it may require more intensive antibiotic (Read about "Antibiotics") or anti-fungal treatment to eliminate the infection, as well as steroid eye drops to reduce inflammation. Frequent visits to an eye care professional may be necessary for several months to eliminate the problem.

Related Information:

    Blepharitis

    Eye Exams

    Eyes and Sun