[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/cornea/)

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# cornea

noun (a cornea, corneas)

«cornea» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

The clear, curved, dome-shaped layer at the front of the eye that covers the iris and pupil and helps focus light. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#m1)

### In the lessons

In science lessons on the eye and seeing, pupils label the parts: cornea, iris, pupil, lens, retina, optic nerve. The cornea bends light first, then the lens finishes focusing it on the retina. In health and safety, goggles protect the cornea from chemicals and flying bits; a scratch on the cornea hurts a lot. Some people receive a donated cornea in a transplant. Phrases: «a scratched cornea», «corneal transplant».

### Examples

- Light passes through the cornea before it reaches the lens. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#x1)
- We labelled the cornea on our diagram of the eye. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#x2)
- Wear goggles to protect your cornea in the lab. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#x3)
- The doctor said I had a tiny scratch on my cornea. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#x4)
- The cornea has no blood vessels, so it is clear. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#x5)
- A cornea transplant can help some people see again. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/#x6)

### Note

Said «KOR-nee-uh». Plural: corneas. The adjective is «corneal». Do not confuse the cornea (clear front window) with the iris (the coloured part) or the retina (at the back, where light is sensed).

## On Mova

- [Trees and pragmatics of «cornea» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cornea/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«cornea» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/cornea.html) on Mova free.