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cornea    音标拼音: [k'ɔrniə]
n. 角膜

角膜

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  • Cornea - Wikipedia
    The cornea is the transparent front part of the eye which covers the iris, pupil, and anterior chamber Along with the anterior chamber and lens, the cornea refracts light, accounting for approximately two-thirds of the eye's total optical power [1][2] In humans, the refractive power of the cornea is approximately 43 dioptres [3]
  • Cornea: What It Is, Common Disorders Preventing Injury
    What is the cornea? Your cornea is the clear, dome-shaped covering at the front of each of your eyes It’s like your eye’s version of a windshield It keeps debris, germs and more out Its specific shape plays a key role in how your eyesight works and filters some ultraviolet (UV) rays
  • Cornea: Anatomy, Common Symptoms, and Treatments - WebMD
    What Is a Cornea? Your cornea is your eye’s clear, protective outer layer, sitting at the front like a car windshield It acts like a barrier against dirt and germs, and it helps filter out
  • Corneal Conditions - National Eye Institute
    The cornea is the clear outer layer at the front of the eye There are several common conditions that affect the cornea Read about the types of corneal conditions, whether you are at risk for them, how they are diagnosed and treated, and what the latest research says
  • Cornea | Structure, Function Disease | Britannica
    Cornea, dome-shaped transparent membrane about 12 mm (0 5 inch) in diameter that covers the front part of the eye Except at its margins, the cornea contains no blood vessels, but it does contain many nerves and is very sensitive to pain or touch
  • Cornea Function, Definition Anatomy | Body Maps - Healthline
    The cornea is the transparent part of the eye that covers the front portion of the eye It covers the pupil (the opening at the center of the eye), iris (the colored part of the eye), and
  • Cornea - Definition and Detailed Illustration - All About Vision
    Here is some basic information to know about this important part of the eye The cornea is the clear front surface of the eye It lies directly in front of the iris and pupil, and it allows light to enter the eye Viewed from the front of the eye, the cornea appears slightly wider than it is tall
  • Cornea Anatomy: The 5 Layers and Their Role in Eye Health
    The cornea is the clear, dome-shaped tissue covering the front of the eye It sits over the iris, the coloured part of your eye, and the pupil, the dark round opening in the middle
  • Cornea - Simple English Wikipedia, the free encyclopedia
    It is a special form of tissue The cornea is clear and has no blood vessels It has nerves, but with no myelin sheaths on them The cornea, with the lens, refracts light The cornea and the lens bend light so the image strikes the retina The cornea does about two-thirds of this refraction [1][2] Dua's layer is a newly discovered layer of the
  • Cornea Disease: Cataracts | Cleveland Clinic
    What is the cornea? The cornea is the transparent structure on the front of the eye through which we see It is the tissue that is reshaped during laser vision correction It begins the process of seeing by focusing onto the retina the light that it receives





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