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About the Cornea

What is the cornea and what does it do?

The cornea is the transparent part of the eye that covers the iris and the pupil and allows light to enter the inside. 

The cornea is the eye’s outermost layer, offering a protective barrier and acts as a window. The cornea also contributes between 65-75 percent of the eye’s total focusing power. Because it’s the outermost lens, it’s also the most exposed and the most susceptible to damage.  

Conditions, Diagnosis, & Treatment

Common corneal conditions include:

  • Injuries: Small abrasions or scratches on the cornea usually heal on their own. Deeper scratches or other injuries can cause corneal scarring and vision problems.
  • Corneal diseases: Corneal diseases can range from degenerative conditions to small infections and can be serious.
  • Allergies: Allergies to pollen can irritate the eyes and cause pink eye (allergic conjunctivitis), making your eye itchy, watery, and red.
  • Keratitis: inflammation of the cornea caused by infection, injury, disease, or wearing contact lenses too long. Keratitis can cause eye redness, pain, and blurred or decreased vision.
  • Keratoconus: Often referred to as “KC,” keratoconus is a non-inflammatory eye condition in which the typically round dome-shaped cornea progressively thins and weakens, causing the development of a cone-like bulge and optical irregularity of the cornea. This causes “static” in your vision and can result in significant visual impairment.

Corneal Condition Diagnosis and Treatment

At Rottman Eye Care our eye care experts can check for corneal conditions as part of a comprehensive eye exam. Depending on the type and severity of the corneal condition, treatment can range from prescription eye drops, laser treatments, or corneal transplants.

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