Cornea: What It Is, Common Disorders & Preventing Injury
2024年1月9日 · 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. Cleveland Clinic is a non-profit academic medical center.
Cornea - Definition and Detailed Illustration - All About Vision
2019年2月27日 · The cornea is the clear front surface of the eye. It lies directly in front of the iris and pupil, and allows light to enter the eye. The cornea has five layers. From front to back, these layers are...
Cornea: Anatomy, Common Symptoms, and Treatments - WebMD
2023年11月16日 · What Is a Cornea? Your cornea is your eye’s clear, protective outer layer. It acts like a barrier against dirt and germs, and it helps filter out some of the sun's damaging ultraviolet...
Corneal Conditions - National Eye Institute
2024年12月11日 · 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 - Wikipedia
The cornea is the transparent front part of the eye that 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 | Structure, Function & Disease | Britannica
2024年12月24日 · 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: Anatomy, Function, and Treatment - Verywell Health
2022年10月25日 · The cornea is the clear dome of tissue at the front of the eye. It connects smoothly to the sclera (the white part of the eye). The cornea refracts light through the lens below it, which allows the eye to process images. Injuries to the cornea can impair a person’s vision.