cornea
1 of 1noun/ˈkɔrniə/
Forms:corneas
1
(anatomy) the transparent layer that covers the outside of the eyeball
C2Learn more on WikipediaThe cornea is the transparent, dome-shaped layer at the front of the eye that covers the iris and pupil. It plays a crucial role in refracting and focusing light onto the retina, allowing us to see clearly. The cornea is composed of specialized cells and is responsible for most of the eye's focusing power. It is essential for maintaining the integrity of the eye and protecting it from external elements.
- The cornea is the transparent, dome-shaped layer covering the front of the eye, responsible for refracting light rays to focus images onto the retina.
- Contact lenses sit on the surface of the cornea, providing vision correction for individuals with refractive errors.
- The cornea lacks blood vessels, obtaining nutrients and oxygen directly from tears and aqueous humor.
- Injuries or infections affecting the cornea can cause pain, blurred vision, and sensitivity to light.
- Corneal transplantation, also known as a corneal graft, may be necessary to restore vision in cases of severe corneal damage or disease.