What is the cornea?

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  1. American Academy of Ophthalmology
     

    The cornea is the clear front window of the eye. It covers the iris (colored portion of the eye) and the round pupil, much like a watch crystal covers the face of a watch. The cornea is composed of five layers. The outermost layer is called the epithelium.

    More Related Answers from American Academy of Ophthalmology
    The cornea is the clear front window of the eye. It covers the iris (colored portion of the eye) and the round pupil, much like a watch crystal covers the face of a watch. The cornea is composed of five layers. The outermost layer is called the... More
  2. Riverside Hampton Roads Eye Associates
     

    The cornea is the eye's outermost layer. It is the clear, dome-shaped surface that covers the front of the eye.

    This answer is based on source information from the National Institute of Diabetes and Digestive and Kidney Diseases.

    Picture of corneal

    More Related Answers from Riverside Hampton Roads Eye Associates
    The cornea is the eye's outermost layer. It is the clear, dome-shaped surface that covers the front of the eye. This answer is based on source information from the National Institute of Diabetes and Digestive and Kidney Diseases. More
  3. Healthwise
     
    Healthwise answered:

    The cornea is the outer, clear, round structure that covers the colored part of the eye (iris) and the pupil. The cornea directs light rays into the eye and helps focus them on the light-sensitive retina at the back of the eye, providing sharp, clear vision.

    Vision problems such as astigmatism or nearsightedness (myopia) are often caused by changes in the normal shape of the cornea.


    More Related Answers from Healthwise
    The cornea is the outer, clear, round structure that covers the colored part of the eye (iris) and the pupil. The cornea directs light rays into the eye and helps focus them on the light-sensitive retina at the back of the eye, providing sharp,... More
  4. RealAge
     
    RealAge answered:

    No doubt about it, your eye is full of fragile stuff. Thank goodness for your cornea, that tough, transparent, dome-shaped cover on the outside of the colored part of your eye. It defends against dust, debris, and even bacteria. The curved shape of the cornea also bends light as it enters your eye, helping to focus images on the retina.

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    More Related Answers from RealAge
    No doubt about it, your eye is full of fragile stuff. Thank goodness for your cornea, that tough, transparent, dome-shaped cover on the outside of the colored part of your eye. It defends against dust, debris, and even bacteria. The curved... More